inch-pound - bidlink...bs en 10025-1 - hot rolled products of structural steel. general technical...
TRANSCRIPT
Comments, suggestions, or questions on this document should be addressed to: Commander, Naval Sea Systems
Command, ATTN: SEA 05S, 1333 Isaac Hull Avenue, SE, Stop 5160, Washington Navy Yard DC 20376-5160 or
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AMSC N/A FSC 5342
INCH-POUND
MIL-DTL-18001L
3 December 2013
SUPERSEDING
MIL-A-18001K
w/INT. AMENDMENT 3
24 October 2007
MIL-A-18001K
16 December 1991
DETAIL SPECIFICATION
ANODES, SACRIFICIAL ZINC ALLOY
This specification is approved for use by all Departments and Agencies of the Department of Defense.
1. SCOPE
1.1 Scope. This specification covers the requirements for zinc anodes (galvanic protectors) in the form of
plates, slabs, discs, and rods for corrosion protection (cathodic protection) of metals and alloys. It also includes
features of anode design and fabrication, such as cast-in cores for mounting purposes. The material described by
this specification contains elements for which the Occupational Safety and Health Administration (OSHA) has set
standards for exposure limits. Handling, storage, and application of this material should be in accordance with the
29 CFR 1910 and 1915 and any other safety and health regulations (local or otherwise) which may apply.
1.2 Classification. The anodes are of the following classes, types, and styles, as specified (see 6.2).
1.2.1 Class 1 – cast-in cores.
Type ZHS – Zinc, hull slab (steel straps) (23- and 42-pound sizes).
Type ZHB – Zinc, hull slab (brass straps) (23-pound size).
Type ZHC – Zinc, hull slab (core straps) (23- and 42-pound sizes).
Type ZSS – Zinc, submarine slab (steel strap) (12- and 24-pound sizes).
Type ZTS – Zinc, teardrop shape (steel strap) (5-pound size).
Type ZEP – Zinc, fairwater slab (pipe core or pipe bushing core).
Style A – Square slab (9-pound size).
Style B – Circular slab (various sizes).
Style C – Semi-circular slab (23-pound size).
Type ZBP – Zinc, bar (pipe core) (8-pound size).
Type ZBS – Zinc, bar (steel straps) (8.5-pound size).
Type ZDM – Zinc, segmented disc (machine-formed interlocking core).
Type ZMP – Zinc, mooring chain (pipe core or pipe bushing core) (various sizes).
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1.2.2 Class 2 – plain, no cores.
Type ZRN – Zinc, rod, no core, extruded, drawn or rolled.
Type ZPN – Zinc, plate, no core, rolled.
1.3 Key to symbols. The letter designations for the types of anodes are shown in table I.
TABLE I. Letter designations of anode types.
First letter (designates
anode metal)
Second letter (designates shape or
general use) Third letter (designates core)
Z - (zinc) H - (hull slab) B - (brass straps)
S - (submarine slab) S - (steel strap)
T - (teardrop shape) C - (core strap)
E - (fairwater slab) P - (pipe core)
R - (rod, cylindrical) M - (machine-formed interlocking core)
P - (plate) N - (no core)
B - (bar, square)
D - (disc, segmented)
M - (mooring chain)
2. APPLICABLE DOCUMENTS
2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This
section does not include documents cited in other sections of this specification or recommended for additional
information or as examples. While every effort has been made to ensure the completeness of this list, document
users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this
specification, whether or not they are listed.
2.2 Government documents.
2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a
part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are
those cited in the solicitation or contract.
FEDERAL SPECIFICATIONS
QQ-B-639 - Brass, Naval: Flat Products (Plate, Bar, Sheet, and Strip)
FEDERAL STANDARDS
FED-STD-H28 - Screw-Thread Standards for Federal Services
FED-STD-H28/7 - Screw-Thread Standards for Federal Services Section 7 Pipe Threads,
General Purpose
(Copies of these documents are available online at http://quicksearch.dla.mil/ or https://assist.dla.mil.)
2.2.2 Other Government documents, drawings, and publications. The following other Government documents,
drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified,
the issues of these documents are those cited in the solicitation or contract.
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CODE OF FEDERAL REGULATIONS (CFR)
29 CFR 1910 - Occupational Safety and Health Standards
29 CFR 1915 - Occupational Safety and Health Standards for Shipyard Employment
(Copies of these documents are available from the Superintendent of Documents, U.S. Government Printing Office,
Washington DC 20401 or online at www.gpoaccess.gov/index.html.)
2.3 Non-Government publications. The following documents form a part of this document to the extent
specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or
contract.
ASTM INTERNATIONAL
ASTM A36/A36M - Standard Specification for Carbon Structural Steel
ASTM A53/A53M - Standard Specification for Pipe, Steel, Black and Hot Dipped, Zinc
Coated, Welded and Seamless
ASTM A513/A513M - Standard Specification for Electric Resistance Welded Carbon and Alloy
Steel Mechanical Tubing
ASTM A524 - Standard Specification for Seamless Carbon Steel Pipe for Atmospheric
and Lower Temperatures
ASTM B139/B139 - Standard Specification for Phosphor Bronze Rod, Bar, and Shapes
ASTM E290 - Standard Test Method for Bend Testing of Material for Ductility
ASTM E536 - Standard Test Methods for Chemical Analysis of Zinc and Zinc Alloys
(Copies of these documents are available from ASTM International, 100 Barr Harbor Dr., P.O. Box C700, West
Conshohocken, PA 19428-2959 or online at www.astm.org.)
EUROPEAN COMMITTEE FOR STANDARDIZATION
BS EN 10025-1 - Hot Rolled Products of Structural Steel. General Technical Delivery Conditions
BS EN 10305-1 - Steel Tubes for Precision Applications
(Copies of these documents are available online from BSI at http://shop.bsigroup.com/.)
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO)
ISO 2768-1 - General Tolerances – Part 1: Tolerances for Linear and Angular Dimensions
without Individual Tolerance indications
(Copies of this document are available from International Organization for Standardization (ISO), 1, ch. de la Voie-
Creuse, Case postale 56 CH-1211 Geneva 20, Switzerland or online at www.iso.org.)
2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between
the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this
document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.
3. REQUIREMENTS
3.1 Materials.
3.1.1 Zinc. The anodes shall conform to the composition specified in table II as determined by the methods
specified herein (see 4.3.3). Total of elemental constituents not specified in table II shall not exceed 0.10 percent.
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TABLE II. Chemical composition, zinc anodes.
Element Weight (percent)
Lead <0.006
Iron <0.005
Cadmium 0.025 – 0.07
Copper <0.005
Aluminum 0.1 – 0.5
Zinc >99.414
3.1.2 Steel straps and pipe. Type ZHS, ZHC, ZSS, ZBS, and ZTS anodes shall have steel strap cores
conforming to ASTM A36/A36M or BS EN 10025-1. Type ZEP and ZBP anodes shall have steel pipe cores
conforming to ASTM A524 or BS EN 10305-1. Type ZMP anodes shall have steel pipe cores conforming to
ASTM A524 and ASTM A513/A513M. Hot dip or electrodeposition methods may be used. Either coating shall be
adherent and free from flaking. The coating shall adhere tenaciously to the surface of the base metal (see 4.3.3.5).
3.1.3 Brass straps. Type ZHB zinc anodes shall have brass strap cores conforming to Alloy 482 of QQ-B-639
or phosphor bronze straps conforming to Composition A of ASTM B139/B139M. The brass or bronze straps shall
be coated with zinc to a minimum thickness of 0.0005 inch (0.0127 millimeter) (see 4.3.3.5). The maximum copper
content in the zinc, as specified in table II, may be increased to 0.020 percent for Type ZHB anodes.
3.1.4 Steel machine-formed interlocking cores. Type ZDM zinc anodes shall have machine-formed
interlocking cores conforming to commercial grade mild or leaded steel. The cores shall be flash coated with zinc,
tin, or aluminum prior to assembly within the zinc anodes.
3.1.5 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally
preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the
operational and maintenance requirements, and promotes economically advantageous life cycle costs.
3.1.6 OSHA standards. The material described by this specification contains elements for which the
Occupational Safety and Health Administration (OSHA) has set standards for exposure limits. Handling, storage,
and application of this material should be in accordance with the most recent 29 CFR 1910 and 1915 and any other
safety and health regulations (local or otherwise) which may apply.
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3.2 Manufacture.
3.2.1 Type ZHS, ZHB, and ZHC, hull slab anodes (see figures 1, 2, and 7 through 10), types ZSS, submarine
slab anode, type ZBS, zinc bar steel strap anode, and ZTS, teardrop anodes (see figures 4 through 7 and figure 22).
Type ZHS, ZHB, ZHC, ZSS, ZBS, and ZTS anodes shall be manufactured by any casting process provided the
anodes meet the other requirements covered by this specification. Open or closed molds may be used. Cores and
straps shall be positioned so that they are embedded ¼ inch -1⁄16 inch or +⅛ inch (6.35 millimeters -1.58 millimeters
or +3.175 millimeters) as shown on figures 1 through 11 which may be measured from either surface of anode as
applicable, except figure 5, which shall be embedded 3⁄8 inch -
1⁄16 inch or +⅛ inch (9.525 millimeters -1.58 millimeters
or +3.175 millimeters) and figure 22, which shall be embedded .86 inch ±⅛ inch (21.8 millimeters ±3.3
millimeters). A metallurgical bond shall be obtained between the zinc and the strap when tested as specified in
4.3.1.3 or 4.3.1.4. Type ZHC anodes, designated as shown on figures 9 and 11, are intended for use with rubber
washers for submarine application. Countersinks for rubber washers shall be cast or machined. Anode shall be
manufactured so that the countersink is centered on the core hole. Type ZSS anodes, designated as shown on figures
4 through 6, and type ZBS anode as shown on figure 22, may be mounted by welding or by fasteners. Those
intended to be attached by fasteners shall indicate the requirements for mounting holes in the strap. The mounting
hole shall be counterbored on the structure side of the strap.
3.2.2 Type ZEP, fairwater slab anode, and type ZMP, mooring chain anode (see figures 12 through 20 and
figure 28). The pipe core inserts shall conform to 3.1.2. A sound metallurgical bond shall be obtained between the
core and anode material for at least 30 percent of the total surface of the core in contact with the anode when tested
as specified in 4.3.1.3 or 4.3.1.4. The position of the pipe core insert shall not vary more than ±⅛ inch
(3.175 millimeters) from center as shown on figures 12 through 20 and figure 28.
3.2.3 Type ZBP, zinc bar anode (see figure 21) and type ZBS, zinc bar steel strap anode. The position of the
pipe core and steel strap insert specified in 3.1.2 shall not vary more than ±¼ inch (6.35 millimeters) from the center
as shown on figure 21 and figure 22. The metallurgical bonding requirements between anode and core specified in
4.3.1 shall apply.
3.2.4 Types ZPN and ZRN anodes (no core) (see figure 23). Type ZPN and ZRN anodes (no core) shall be
manufactured by any process provided the anodes pass the tests demonstrating mechanical properties (see 3.6) and
other requirements covered by this specification.
3.2.5 Type ZDM, zinc segmented disc, machine-formed interlocking core anode (see figures 24 through 27).
Metallic bonding or an interference fit of the core into the anode shall be required so that an axial force applied from
the stud end to remove the core insert is a minimum of 750 pounds (340 kilograms).
3.2.5.1 Core insert. The machine-formed core insert specified in 3.1.4 shall be manufactured in accordance
with details and tolerances shown in FED-STD-H28 and FED-STD-H28/7. This core insert has been designed for
mass production by modern machine methods. The insert consists of an integral piece having a threaded male stud
at one end and a tapped hole at the other end. Provision has been made to achieve self-locking characteristics to
interlocking threaded assemblies of multiple segmented anode discs by interference fit of bottom male threads into a
taper tapped hole. These anodes shall screw together very snugly by hand tightening or by using simple hand tools,
such as pliers or pipe wrenches.
3.3 Dimensions. Anode dimensions shall be as specified on figures 1 through 30 (see 4.2.2).
3.3.1 Types ZHS, ZHB, ZHC, ZTS, ZSS, ZBS, ZEP, ZBP, ZDM, ZRN, and ZMP anodes. The specified
anodes shall conform to the dimensions shown on figures 1 to 28, inclusive. Dimensions are in inches unless
otherwise indicated on the figure.
3.3.2 Type ZPN anodes. Type ZPN anodes shall be 48 inches (1219.2 millimeters) in length by 24 inches
(609.6 millimeters) in width. Thickness of Type ZPN anode shall be either 0.5 or 1 inch (12.7 or 25.4 millimeters),
as specified (see 6.2).
3.3.3 Weight. Minimum weight requirements are specified on figures 1 through 30. The total weight of the
specified type of anode received divided by the total number of anodes of that type shall be equal to or greater than
the minimum weight of anode type specified (see 4.2.2).
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3.4 Permissible variation in dimensions.
3.4.1 Length and width of types ZHC, ZHB, ZHS, ZTS, ZPN, ZSS, ZBS, and ZBP anodes. The width and
length of the zinc alloy on Types ZHC, ZHB, ZHS, ZTS, ZPN, ZSS, ZBS, and ZBP anodes shall not vary more than
±⅛ inch (3.75 millimeters), measured at the widest surface of the tapered (for mold release) anode.
3.4.2 Length of type ZRN anodes. A variation of ±0.25 inch (6.35 millimeters) will be permitted based on
nominal lengths of 3 and 6 feet (0.91 and 1.83 meters).
3.4.3 Diameter of types ZEP, ZDM, and ZRN anodes. The diameter or width, whichever is the larger, of Type
ZEP anode shall not vary from the specified dimension by more than ±⅛ inch (3.175 millimeters). The diameter of
the Type ZDM anode shall not vary more than +0.025 or -0.005 inch (+0.635 or -0.127 millimeter) from the
specified diameter. The diameter of the Type ZRN anode shall not vary more than ±1⁄32 inch (0.79 millimeter) from
the specified diameter.
3.4.4 Thickness. The thickness of Types ZHS, ZHB, ZHC, ZTS, ZPN, ZSS, ZBS, ZEP, and ZBP zinc anodes
shall not vary more than ±⅛ inch (3.175 millimeters). Except for Type ZEP anodes, thickness measurements shall
be taken at random 1 inch (25.4 millimeters) from any edge of the anode by means of a suitable caliper, avoiding
any surface irregularities which would interfere with a representative measurement. Type ZEP anode thickness
measurements shall be taken at random, a distance from the edge of approximately one-half the radius of the anode.
The thickness of Type ZDM anode shall not vary more than ±1⁄64 inch (0.397 millimeter).
3.4.5 Eccentricity of core in type ZDM anode. The cores of Type ZDM anode shall be positioned axially and
concentrically in the zinc disc. Eccentricity greater than 0.005 inch (0.127 millimeter) shall not be permitted.
3.4.6 Stud hole elongation for type ZSS and ZBS anodes. When specified (see 6.2), Type ZSS and ZBS straps
may be modified as shown on figure 6.
3.5 Marking of anodes.
3.5.1 Marking. The zinc anodes, Types ZHS, ZHB, ZHC, ZSS, ZBS, ZBP, ZMP, ZTS, ZEP, and ZPN shall
have the anode type and the words “DO NOT PAINT” die-stamped or cast on the exposed face of the anodes (see
figures 1 through 22 and 28 through 30). No marking shall be required for Types ZDM, and ZRN zinc anodes. For
Type ZMP, the nominal anode size shall be marked as specified on figure 28.
3.5.1.1 Type ZHB anode markings. One end of each cast-strap of each Type ZHB anode shall be painted red
so that the installing activity can distinguish it from Type ZHS anodes. One coat of red paint shall be applied
between the joggled bevel of the strap and zinc anode. The coating shall be approximately ½ inch (12.7 millimeters)
wide and shall extend across one side of each strap so as to be readily visible when the anode is installed. The foot
of the strap shall not be painted.
3.5.2 Heat identification. Each anode shall be cast or die-stamped with the following: manufacturer’s symbol,
unique non-recurring heat number specific to production lot (see 4.2.1), and the capital letter corresponding to the
revision letter of the military specification to which the anode conforms. (For this specification issue, the letter “L”
should be used.)
3.6 Mechanical properties.
3.6.1 Fracture or cracking. When tested in accordance with 4.3.3.3, Type ZRN rods and Type ZPN plates shall
not fracture or show signs of cracking.
3.6.2 Torsional shear strength. When tested in accordance with 4.3.3.4, Type ZRN anodes shall have a
minimum torsional shear strength of 12,000 pounds per square inch (lb/in2) [8,437,000 kilograms per square meter
(kg/m2)].
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3.7 Workmanship.
3.7.1 Zinc. The zinc anodes shall be free of flash burrs, cracks, blow holes, pipes, and surface slag consistent
with good commercial practice (see 4.2.2). The cast anodes shall be free of shrinkage cavities exceeding ¼ inch
(6.35 millimeters) in depth, except that anodes 2 inches (50.8 millimeters) thick or more shall be free of shrinkage
cavities exceeding 3⁄8 inch (9.53 millimeters) in depth, when measured from a straight edge placed diagonally across
the opposite edges of the anode. For Type ZPN anodes, the shrinkage cavities shall be measured over a 12- by
12-inch (304.8- by 304.8-millimeter) area. In addition to the above allowable shrinkage cavities, surface
irregularities of the anode exceeding ⅛ inch (3.18 millimeters) in depth shall not be permitted on one face of slab or
disc type anodes unless at least ⅛ inch (3.18 millimeters) of sound metal covers the entire strap of core area. Types
ZDM, and ZRN anodes shall be smooth on their curved surfaces.
3.7.2 Metal cores. Metal cores extensions from the anodes shall be smooth and free of sharp burrs. The cast-in
cores shall have metallurgical bonds specified herein free of air pockets and inclusions consistent with good
commercial practice.
4. VERIFICATION
4.1 Conformance inspection. Conformance inspection shall include the examinations of 4.2 and the tests of
4.3.
4.1.1 Lot. For the purpose of sampling, a lot shall consist of all zinc anodes of the same class and type, poured
or cast from one homogeneous heat or melt of a single charge or raw materials. The addition of any material to the
heat or melt at any time constitutes a new lot.
4.2 Visual and dimensional examination. Each anode selected in accordance with 4.2.1 shall be examined for
conformance to requirements of 3.3 through 3.7. If any anodes do not conform to 3.3 through 3.7, it shall be cause
for rejection of the entire lot.
4.2.1 Sampling for visual and dimensional examination. As a minimum, a sample quantity of anodes shall be
selected from each lot in accordance with table III. If one or more defects are found in any sample, the entire lot
shall be rejected. The contractor has the option of screening 100 percent of the rejected lot for the defective
characteristic(s) or providing a new lot which shall be inspected in accordance with the sampling plan provided
herein.
4.2.2 Examination procedure. Anodes selected in accordance with 4.2.1 shall be measured for weight and
dimension, and be visually inspected at 10 times the magnification for workmanship. No cracks with a surface
length greater than ⅛ inch (3.175 millimeters) shall be allowed. The entire lot of each type anode shall meet the
weight requirements as specified in 3.3.3. If the weight is less than the minimum weight for the type of anode
specified, it shall be cause for rejection of the entire lot.
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TABLE III. Sampling for visual and dimensional examination.
Lot size Sample size Accept Reject
2 – 25 3 0 1
26 – 50 5 0 1
51 – 90 6 0 1
91 – 150 7 0 1
151 – 280 10 0 1
281 – 500 11 0 1
501 – 1200 15 0 1
1201 – 3200 18 0 1
3201 – 10,000 22 0 1
10,000 and over 29 0 1
4.3 Tests. The following tests shall be performed.
4.3.1 Core bonding test. One of the following core bonding tests (4.3.1.3 or 4.3.1.4) shall be performed on
each anode selected in accordance with 4.3.1.1.
4.3.1.1 Sampling for core bond tests. From each lot specified in 4.1.1, two anodes shall be selected at random
of Types ZHS, ZHB, ZHC, ZSS, ZBS, ZTS, ZEP, ZMP, and ZBP and five anode discs of Type ZDM for the test
specified.
4.3.1.2 Resampling. In cases where one of the two anodes tested failed to pass the core bond test, four
additional anodes may be selected for retest at the direction of the manufacturer.
4.3.1.3 Core bonding test procedure. Each anode selected to represent the lot shall be cut along the axis of each
strap or core, and the cut surface shall be ground reasonably smooth. These surfaces shall be polished with a
240-mesh emery abrasive until the zinc-strap interface is distinctly visible. At least 30 percent of this interface shall
show no separation when examined at approximately 10 times the magnification. Zinc anodes may have a bead or
buttress projecting from the anode edge along the strap not exceeding ¼ inch (6.35 millimeters). Less bond between
core and zinc than specified herein shall be cause for rejection of the lot.
4.3.1.4 Alternate core bonding test. Using any suitable method, the cores shall be torn from each anode
selected to represent the lot. The use of a sledge hammer to break the zinc away from the cores has been found to be
satisfactory. The area showing bond shall be established by visual inspection of the portion of the cores which were
contained within the anode. The metallurgical bond between the zinc and the core shall be at least 30 percent of the
total surface area of each core in contact with the zinc of the anode. For the purpose of determining the surface area
of the encased core in the anode, marks shall be scribed on the strap around the periphery of each anode at locations
where the straps protrude from the anode. The total area of the strap shall be computed between the scribe marks.
The surfaces shall have a smooth grey matte finish where bonding has been adequate and either a shiny metallic or
rough, dark, or discolored finish where bonding has been inadequate. Both core and zinc mating surfaces shall be
examined. Less bond between core and zinc than that specified herein shall be cause for rejection of the entire lot.
4.3.1.5 Type ZDM anode. A minimum steady pressure of 750 pounds (340 kilograms) from a hand-operated
pen press applied axially shall be required to remove the core from the anode.
4.3.1.6 Sample anodes. Sample anodes shall be discarded and not included in the delivery of material after the
core bond tests are performed. The remaining lengths of ZRN and ZPN anodes may be included in the delivery of
material after the physical tests of 4.3.3. Sampling for chemical analysis, as specified in 4.3.2.1, shall be made prior
to discarding the anodes specified in 4.3.1.3 through 4.3.1.5.
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4.3.2 Chemical analysis. The chips selected in accordance with 4.3.2.1 shall be analyzed to determine
conformance with 3.1.1. A strong magnet shall be used to remove any iron contamination picked up during the
preparation of the chips. The chips shall be washed in an iron-free degreasing solvent prior to analysis. If any
sample does not conform to the chemical composition specified in table II, it shall be cause for rejection of the lot
represented by the sample.
4.3.2.1 Sampling for chemical analysis. Anodes shall be taken from each homogenous lot to verify compliance
with the chemical requirements of 3.1.1 and table II. As a minimum, the first, middle, and last poured anode shall
be tested to verify compliance with the chemical requirements of 3.1.1 and table II. The drilling for sampling for
chemical analysis shall be made with a special nonferrous drill bit. See 4.3.2.7, 6.5.1, and 6.5.2 for sample
preparation and drilling procedure. From each of the required anodes, one 2-ounce sample shall be taken by drilling
or machining the material at the locations specified in 4.3.2.2 to 4.3.2.7, inclusive. The drill or tool bit shall not
penetrate into the core material of the cored type anodes. The drilled or machined anodes may be included in the
delivery of the material, except Type ZDM which shall be discarded.
4.3.2.2 Drilling locations. Type ZHS and ZHB anodes shall be drilled or machined at locations about
2 to 5 inches (50.8 to 127 millimeters) from the short edge as appropriate to keep away from the encased core.
4.3.2.3 Drilling precautions. Type ZSS, ZBS, ZHC, and ZTS anodes shall be drilled or machined at points not
greater than ½ inch (12.7 millimeters) from the long edge.
4.3.2.4 Drilling points for types ZEP, ZMP, and ZBP. Type ZEP, ZMP, and ZBP anodes shall be drilled at
points midway between the outer edge of the core and the edge of the anode.
4.3.2.5 Type ZDM samples. Type ZDM anodes shall have a sufficient number of discs machined or drilled to
make two 4-ounce quantities. Type ZDM anodes shall be machined or drilled at the outer surface to a depth not
exceeding ¼ inch (6.35 millimeters).
4.3.2.6 Surface chips. One 2-ounce sample for each anode specified in 4.3.2.1 shall be taken at the surface in
contact with mold wall by drilling or machining to a maximum depth of ¼ inch (6.35 millimeters). The sample for
Types ZPN and ZRN shall be taken by drilling completely through both larger surfaces or through the diameter of
the anode, as applicable. The samples shall be collected in individual clean containers, and properly labeled as to
lot, melt, and sample numbers. Sample chips may be taken from anodes which have passed the applicable bond test.
Samples shall be clean and free from dirt, oil, grit, and foreign matter. The samples shall be sent to a laboratory
acceptable to the contracting agency. A method for sampling anodes for chemical analysis is specified in 6.5.
4.3.2.7 Determination of aluminum, cadmium, copper, iron, and lead. The aluminum, cadmium, copper, iron,
and lead content of zinc shall be determined in accordance with the appropriate methods in ASTM E536 using the
atomic absorption, inductively coupled plasma, or directly coupled plasma spectrophotometers.
4.3.2.8 Spectrochemical analysis. Spectrochemical analysis shall be in accordance with any standard method
approved by a standard issue body, such as the American National Standards Institute or ASTM E536, and accepted
by the Government.
4.3.3 Physical tests.
4.3.3.1 Sampling for physical testing. At least five Type ZRN and five Type ZPN anodes shall be selected at
random from a lot. Type ZRN anodes shall conform to the tests specified in 4.3.3.3 and 4.3.3.4. Type ZPN anodes
shall conform to the test specified in 4.3.3.3.
4.3.3.2 Physical test sample dimensions for ZPN type anodes. Type ZPN test samples shall be cut from the
plate anodes and shall be of the following dimensions:
a. Width: Twice the thickness of the anode.
b. Length: 12 inches (304.8 millimeters) (or to suit test apparatus).
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4.3.3.3 Bend test. Type ZRN anodes, selected in accordance with 4.3.3.1, shall be bent 45 degrees around a
mandrel that has a diameter of three times the thickness of the Type ZPN anode. Type ZPN anodes, selected in
accordance with 4.3.3.2, shall be bent 45 degrees around a mandrel of three times the diameter of Type ZPN anodes.
The anodes shall be bent in accordance with procedures specified in ASTM E290. After bending, the convex
surface of the specimens shall be inspected for cracking by visual examination. Any evidence of cracking shall
represent failure of the test and shall be cause for rejection of the entire lot.
4.3.3.4 Torsional shear test. Type ZRN anodes, selected in accordance with 4.3.3.1, shall be subjected to
torsional shear at a rate of 10 to 12 revolutions per hour using a Tinius-Olson torsional shear apparatus, or equal.
Failure of the anode to withstand a torsional shear of 12,000 lb/in2 (8,437,000 kg/m
2) shall be cause for rejection of
the lot.
4.3.3.5 Steel strap/pipe core coating test. When the coating is cut or pried into, such as with a stout knife
applied with considerable pressure in a manner tending to remove a portion of the coating, it shall only be possible
to remove small particles of the coating by paring or whittling, and it shall not be possible to peel any portion of the
coating so as to expose the steel. Lack of adhesion of the zinc coating at bend or absence of zinc coating at cut
edges shall not be cause for rejection of fabricated anodes. Cracks in the base metal shall be cause for rejection.
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or
order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor personnel, these
personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging
requirements are maintained by the Inventory Control Point’s packaging activities within the Military Service or
Defense Agency, or within the military service’s system commands. Packaging data retrieval is available from the
managing Military Department’s or Defense Agency’s automated packaging files, CD-ROM products, or by
contacting the responsible packaging activity.
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)
6.1 Intended use. The anodes are primarily intended for use in corrosion prevention in seawater of surface ship
and submarine hulls, steel and aluminum equipment and structures, sea chests, sonar domes, mooring chains, and the
seawater side of condensers and other heat exchangers. The anodes may also be used for corrosion prevention of
pipe lines and other installations underground. The use of a particular anode is determined by the nature and
geometry of the structure to be protected. Refer to applicable installation instructions for types, amounts, locations,
and mounting of anodes.
6.2 Acquisition requirements. Acquisition documents should specify the following:
a. Title, number, and date of this specification.
b. Class and type (see 1.2).
c. As required, the specific issue of individual documents referenced (see 2.2.1, 2.2.2, and 2.3).
d. Style of Type ZEP, diameter of Type ZEP (Style B), pipe core size (3⁄8 inch or ½ inch); size of Type ZMP
(see figure 27); diameter of Type ZDM (see figures 23 to 26); diameter of Type ZRN required (see figure 23); Type
ZHC, ship or submarine usage with neoprene washers (see figures 7 to 10).
e. Thickness of Type ZPN anode, whether ½ or 1 inch (see 3.3.2).
f. Elongation of Type ZSS and ZBS anode straps (see 3.4.6).
g. Packaging requirements (see 5.1).
h. Total number of anodes required (see 6.3).
6.3 Ordering by quantity. The order for anodes should specify the exact number of anodes required (see 6.2).
See table IV for National Stock Numbers (NSN) for each anode type.
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MIL-DTL-18001L
11
TABLE IV. National stock numbers.
Anode type Size (inches) National stock number
ZHS-23 12 x 6 x 1.25 5342-00-277-7559
ZHS-42 12 x 6 x 2.5 5342-00-134-8131
ZHB-23 12 x 6 x 1.25 5342-00-662-9827
ZHC-23 12 x 6 x 1.25 5342-00-813-6058
ZHC-42 12 x 6 x 2.5 5342-00-486-0957
ZSS-12 12 x 3.5 x 1.25 5342-00-290-8243
ZSS-12 (ELONGATED STRAP END)
12 x 3.5 x 1.25 5342-01-356-6382
ZSS-24 12 x 3.5 x 2.5 5342-01-357-4579
ZSS-24 (ELONGATED STRAP END)
12 x 3.5 x 2.5 5342-01-356-6383
ZTS-5 9 x 3 x 1.375 5342-01-294-2332
ZEP-A (SQUARE) 6 x 6 x 1 5342-00-543-3032
ZEP-B (CIRCULAR)
11 dia x 1 thk 5342-00-702-1664
9 dia x 1 thk 5342-00-702-1372
6 dia x 1 thk 5342-00-702-1371
5 dia x 1 thk 5342-00-527-2366
4 dia x 1 thk 5342-00-582-2011
3 dia x 1 thk 5342-00-582-2012
2 dia x 1 thk 5342-00-527-2368
ZEP-C (SEMI-CIRCULAR) 7.5 r x 1 thk 5342-00-702-1665
ZBP 7.5 x 2 x 2 5342-00-526-3679
ZDM
1.050 in dia 5342-00-682-2174
0.825 in dia 5342-00-725-3999
0.625 in dia 5342-00-725-3998
0.500 in dia 5342-00-725-3997
ZMP
4 in dia 5342-01-357-4580
3.5 in dia 5342-01-356-6384
3.0 in dia 5342-01-356-8260
2.75 in dia 5342-01-356-6385
2.5 in dia 5342-01-356-6386
2.25 in dia 5342-01-356-6387
2 in dia 5342-01-356-6252
1.75 in dia 5342-01-356-6253
1.25 in dia 5342-01-361-2565
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MIL-DTL-18001L
12
TABLE IV. National stock numbers – Continued.
Anode type Size (inches) National stock number
ZRN
1.050 in dia 5342-00-813-6056
0.840 in dia 5342-00-576-1749
0.840 in dia 5342-00-664-0531
0.840 in dia 5342-00-796-4354
0.840 in dia 5342-00-813-6055
0.675 in dia 5342-00-813-6054
0.540 in dia 5342-01-356-6381
0.405 in dia 5342-00-813-6053
ZPN
24 x 48 x 0.5 in 5342-00-290-3793
24 x 48 x 1 in 5342-01-358-4414
6.4 General forms and dimensions. When material is ordered in the form of slabs, bars, discs, or rods, it is to
be understood that these terms refer merely to the general form and dimensions of the material, and do not have any
technical significance as to the methods of manufacture.
6.5 Sampling procedure.
6.5.1 Drilling procedure. The drilling for chemical analysis should be made with a special nonferrous drill in a
clean location (used only for that purpose). The drilling bits should be kept clean of dirt, grit, and other foreign
matter; kept properly sharpened; and used only for sampling purposes. After each use, the drilling bit should be
immersed in a degreasing solvent and wiped dry with a clean rag. The drilling bits, when not in use, should be
stored in an inhibited lubricating oil. The inhibited lubricating oil should be kept in a covered glass container
provided with an air vent. The drilling bits should be wiped dry with a clean rag prior to use. Samples should be
taken with a dry drill. If automatic power drilling equipment is available, a solid tungsten carbide or Tantung twist
drill bit about ½ inch (12.7 millimeters) in diameter is suitable. Where a hand-held power drill is used, the samples
should be taken by drilling with a solid tungsten carbide or Tantung twist drill bit about ¼ inch (6.35 millimeters) in
diameter. A smaller drill bit may be used where the size of the anode does not permit using the specified diameters.
The drills may be used at high speeds and feeds.
6.5.2 Machining procedure. The chips for chemical analysis should be made with a special nonferrous tool in a
place which has been cleaned for that specific purpose. Instructions specified in 6.5.1 apply to the use and care of
this tool.
6.6 Sub-contracted material and parts. The packaging or preparation for delivery of requirements of referenced
documents listed in section 2 do not apply when material and parts are acquired by the contractor for incorporation
into the equipment and lose their separate identity when the equipment is shipped.
6.7 Subject term (key word) listing.
Corrosion
Disc
Galvanic
Plate
Rod
Slab
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MIL-DTL-18001L
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6.8 Changes from previous issue. Marginal notations are not used in this revision to identify changes with
respect to the previous issue due to the extent of the changes.
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MIL-DTL-18001L
14
FIGURE 1. Hull slab (steel straps), type ZHS-23/ZHB.
1. MINIMUM WEIGHT = 21.5 LB / 9.7 KG
2. ANODE MAY BE CAST WITH STRAP IN THE UP OR
DOWN POSITION. ALL DIMENSIONS REFER TO THE
WIDER AND LONGER EDGES OF THE ANODES.
DIMIMPERIAL
(INCH)
METRIC
(MM)
TABLE OF DIMENSIONS
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
R1
6.00±.13
12.00±.13
1.25±.13
10.00±.13
2.00±.13
1.13±.13
3.00±.13
.19±.02
1.25±.13
±.06
.18 MIN
.25
+.13/-.06
152.4±3.3
304.8±3.3
31.7±3.3
254±3.3
50.8±3.3
28.7±3.3
76.2±3.3
4.8±.5
31.7±3.3
6.4
+3.3/-1.5
±1.5
4.6 MIN
D10
SECTION A-A
STRAP FEET FLUSH WITH
CASTING BOTTOM W/IN D11
2X D5
8X
R1
2X
D8
2X STEEL
STRAP
SKETCH A1: HULL SLAB (STEEL STRAPS),
1.25" THICK, TYPE ZHS-23/ZHB
FIGURE 1. Hull slab (steel straps), type ZHS-23/ZHB.
D1
2X D9
D2
2X D7
AA
MOLD RAD
PERMITTED
TYP
4X D6
D4
D3
DRAFT
PERMITTED
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MIL-DTL-18001L
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FIGURE 2. Hull slab (steel straps), type ZHS-42.
D1
2X D9
D2
2X D7
AA
MOLD RAD
PERMITTED
TYP
4X D6
D4
D3
DRAFT
PERMITTED
D10
SECTION A-A
STRAP FEET FLUSH WITH
CASTING BOTTOM W/IN D11
2X D5
8X
R1
2X
D8
2X STEEL
STRAP
SKETCH A2: HULL SLAB (STEEL STRAPS),
2.50" THICK, TYPE ZHS-42
1. MINIMUM WEIGHT = 41 LB / 18.6 KG
2. ANODE MAY BE CAST WITH STRAP IN THE UP OR
DOWN POSITION. ALL DIMENSIONS REFER TO THE
WIDER AND LONGER EDGES OF THE ANODES.
EXPOSED
FACE
DIMIMPERIAL
(INCH)
METRIC
(MM)
TABLE OF DIMENSIONS
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
R1
6.00±.13
12.00±.13
2.50±.13
10.00±.13
2.00±.13
1.13±.13
3.00±.13
.19±.02
1.25±.13
±.06
.18 MIN
.25
+.13/-.06
152.4±3.3
304.8±3.3
63.5±3.3
254±3.3
50.8±3.3
28.7±3.3
76.2±3.3
4.8±.5
31.7±3.3
6.4
+3.3/-1.5
±1.5
4.6 MIN
FIGURE 2. Hull slab (steel straps), type ZHS-42.
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MIL-DTL-18001L
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FIGURE 3. Zinc hull slab (steel straps), type ZHS with 90-degree counterbore.
DIMIMPERIAL
(INCH)
METRIC
(MM)
TABLE OF DIMENSIONS
D1
D2
D3
D4
D5
D6
.56±.06
8.88±.06
.81
+.06/-.00
.625
+.030/-.000
.12±.02
.08 MIN
14.2±1.5
225.5±1.5
20.6
+1.5/-.0
15.9
+.8/-.0
3.0±.5
2.0 MIN
1. SEE SKETCH A1 OR A2 FOR OTHER ANODE DIMENSIONS.
2. MOUNTING HOLES AND COUNTERBORES SHALL ONLY BE
PROVIDED WHEN SPECIFIED.
2X D1
A
HOLE DETAIL A
ØD4
D5
ØD3
D6
FIGURE 2B. Zinc hull slab (steel straps), type ZHS with 90-degree counterbore.
AA
4X MOUNTING HOLES
2X D2
SECTION A-A
ANODE CASTING
2X STEEL
STRAP
SKETCH A3: HULL SLAB (STEEL STRAPS), OPTIONAL
MOUNTING HOLES WITH 90° COUNTERBORES
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MIL-DTL-18001L
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FIGURE 4. Zinc, submarine slab (steel strap), type ZSS-12.
D11
D12
D13
D14
D15
D16
R1
12.0
0±.1
3304.8
±3.3
1.2
5±.1
331.7
±3.3
16.0
0±.1
3406.4
±3.3
2.0
0±.1
350.8
±3.3
1.1
3±.1
328.7
±3.3
.19±.0
24.8
±.5
1.2
5±.1
331.7
±3.3
.25
+.1
3/-
.06
6.4
+3.3
/-1.5
.56±.0
614.2
±1.5
14.8
8±.0
6378±1.5
±.0
6±1.5
.81
+.0
6/-
.00
20.6
+1.5
/-.0
.625
+.0
30/-
.000
15.9
+.8
/-.0
.12±.0
23.0
±.5
.08 M
IN2.0
MIN
.18 M
IN4.6
MIN
FIGURE 4. Zinc, submarine slab (steel strap), type ZSS-12.
DIM
IMP
ER
IAL
(IN
CH
)
ME
TR
IC
(MM
)
TA
BL
E O
F D
IME
NS
ION
S
D1
D2
3.0
0±.1
376.2
±3.3
D3
D4
D5
D6
D7
D8
D9
D10
SK
ET
CH
B1:
SU
BM
AR
INE
SL
AB
(S
TE
EL
ST
RA
P),
1.2
5" T
HIC
K, T
YP
E Z
SS
-12
1.
MIN
IMU
M W
EIG
HT
: 1
1 L
B /
5 K
G
2.
MO
UN
TIN
G H
OLE
S I
N S
TR
AP
S A
RE
OP
TIO
NA
L A
ND
SH
OU
LD
BE
SU
PP
LIE
D O
NLY
WH
EN
SP
EC
IFIE
D.
3.
AN
OD
E M
AY
BE
CA
ST
WIT
H S
TR
AP
IN
TH
E U
P O
R
DO
WN
PO
SIT
ION
. A
LL
DIM
EN
SIO
NS
(IN
CH
ES
)
RE
FE
R T
O T
HE
WID
ER
AN
D L
ON
GE
R D
IME
NS
ION
S
OF
TH
E A
NO
DE
.
TY
P, M
OLD
RA
D
PE
RM
ITT
ED
D8
AA
D2
D5
D10
D11
D1
LE
TT
ER
ING
ON
EX
PO
SE
D F
AC
E
ST
EE
L S
TR
AP
D7
4X
R1
SE
CT
ION
A-A
D9
ST
RA
P F
EE
T F
LU
SH
WIT
H
CA
ST
ING
BO
TT
OM
W/IN
D12
D4
2X
D6
D3
DR
AF
T
PE
RM
ITT
ED
A
HO
LE
DE
TA
IL A
ØD
14
ØD
13
D15
D16
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MIL-DTL-18001L
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FIGURE 5. Zinc, submarine slab (steel strap), type ZSS-24.
FIGURE 5. Zinc, submarine slab (steel strap), type ZSS-24.
DIM
IMP
ER
IAL
(IN
CH
)
ME
TR
IC
(MM
)
TA
BL
E O
F D
IME
NS
ION
S
D1
D2
3.5
0±.1
38
8.9
±3.3
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D16
R1
12.0
0±.1
33
04.8
±3.3
2.5
0±.1
36
3.5
±3.3
16.0
0±.1
34
06.4
±3.3
2.0
0±.1
35
0.8
±3.3
1.1
3±.1
32
8.7
±3.3
.19±.0
24
.8±.5
1.2
5±.1
33
1.7
±3.3
.375
+.1
3/-
.06
9.5
+3.3
/-1
.5
.56±.0
61
4.2
±1.5
14.8
8±.0
6378±1.5
±.0
6±1.5
.81
+.0
6/-
.00
20.6
+1.5
/-.0
.625
+.0
30/-
.000
15.9
+.8
/-.0
.12±.0
23
.0±.5
.08 M
IN2
.0 M
IN
.18 M
IN4
.6 M
IN
SK
ET
CH
B2:
SU
BM
AR
INE
SL
AB
(S
TE
EL
ST
RA
P),
2.5
0" T
HIC
K, T
YP
E Z
SS
-24
TY
P, M
OLD
RA
D
PE
RM
ITT
ED
D8
AA
D2
D5
D10
D11
D1
ST
EE
L S
TR
AP
D7
4X
R1
SE
CT
ION
A-A
D9
ST
RA
P F
EE
T F
LU
SH
WIT
H
CA
ST
ING
BO
TT
OM
W/I
N D
12
D4
2X
D6
D3
DR
AF
T
PE
RM
ITT
ED
A
HO
LE
DE
TA
IL A
ØD
14
ØD
13
D15
D16
LE
TT
ER
ING
ON
EX
PO
SE
D F
AC
E
1.
MIN
IMU
M W
EIG
HT
: 2
1.5
LB
/ 9
.8 K
G
2.
MO
UN
TIN
G H
OLE
S I
N S
TR
AP
S A
RE
OP
TIO
NA
L A
ND
SH
OU
LD
BE
SU
PP
LIE
D O
NLY
WH
EN
SP
EC
IFIE
D.
3.
AN
OD
E M
AY
BE
CA
ST
WIT
H S
TR
AP
IN
TH
E U
P O
R
DO
WN
PO
SIT
ION
. A
LL
DIM
EN
SIO
NS
(IN
CH
ES
)
RE
FE
R T
O T
HE
WID
ER
AN
D L
ON
GE
R D
IME
NS
ION
S
OF
TH
E A
NO
DE
.
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MIL-DTL-18001L
19
FIGURE 6. Zinc, submarine slab (steel strap), type ZSS with elongated stud hole.
FIGURE 5. Zinc, submarine slab (steel strap), type ZSS with elongated stud hole.
DIM
IMP
ER
IAL
(IN
CH
)
ME
TR
IC
(MM
)
TA
BL
E O
F D
IME
NS
ION
S
D4
D5
D6
D7
D8
D10
D11
D12
D14
R1
16.3
8±.1
34
16±3.3
2.3
8±.1
36
0.5
±3.3
1.5
0±.1
33
8.1
±3.3
.19±.0
24
.8±.5
1.2
5±.1
33
1.7
±3.3
.75±.0
61
9.0
±1.5
.625
+.0
5/-
.00
15.9
+1.3
/-.0
0
.75±.0
31
9.0
±.8
15.2
5±.0
43
87.4
±1.0
.18 M
IN4
.6 M
IN
ST
EE
L S
TR
AP
D14
D4
D10
2X
ØD
11
SK
ET
CH
B3
: S
UB
MA
RIN
E S
LA
B S
TE
EL
ST
RA
P, E
LO
NG
HO
LE
CO
NF
IG
1.
ALL
OT
HE
R D
IME
NS
ION
S A
RE
SH
OW
N O
N S
KE
TC
H B
1
OR
B2.
2.
TH
E E
LO
NG
AT
ED
HO
LE
CO
NF
IGU
RA
TIO
N S
HA
LL B
E
PR
OV
IDE
D O
NLY
WH
EN
SP
EC
IFIE
D.
D8
AA
D5
2X
D12
D7
4X
R1
SE
CT
ION
A-A
2X
D6
LE
TT
ER
ING
AS
SH
OW
N
ON
SK
ET
CH
B1 O
R B
2
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MIL-DTL-18001L
20
FIGURE 7. Zinc, teardrop (steel strap), type ZTS.
FIGURE 6. Zinc, teardrop (steel strap), type ZTS.
DIM
IMP
ER
IAL
(IN
CH
)
ME
TR
IC
(MM
)
TA
BL
E O
F D
IME
NS
ION
S
D1
D2
D3
D4
D5
D6
9.0
0±.1
32
28
.6±3
.3
1.0
02
5.4
±.1
3±3
.3
12
.00
±.1
33
04
.8±3
.3
1.5
0±.1
33
8.1
±3
.3
.75
±.1
31
9±3
.3
SK
ET
CH
C:
TE
AR
DR
OP
SH
AP
E (
ST
EE
L S
TR
AP
), T
YP
E Z
TS
1.
MIN
IMU
M W
EIG
HT
: 5
.0 L
B / 2
.3 K
G
2.
CO
NT
OU
R T
OLE
RA
NC
E IS
±D
3 M
EA
SU
RE
D N
OR
MA
L T
O S
UR
FA
CE
.
CO
NT
OU
R S
HA
LL B
E H
YD
RO
DY
NA
MIC
ALLY
FA
IR.
3.
AN
OD
E M
AY
BE
CA
ST
WIT
H E
XP
OS
ED
FA
CE
IN
TH
E U
P O
R D
OW
N P
OS
ITIO
N.
D7
D8
.13
±.0
63
.3±1
.5
.25
±.1
36
.4±3
.3
D9
.94
±.1
32
3.9
±3
.3
D1
0±.1
3±3
.3
R1
.11
MIN
2.8
MIN
CO
NT
OU
R D
EF
INIT
ION
PO
INT
S (
SE
E N
OT
E 2
)
A
IM
PE
RIA
L (
IN)
M
ET
RIC
(M
M)
1.1
1
28
.2
BC
DE
FG
H
SE
CT
ION
A-A
D1
ST
EE
L S
TR
AP
ST
RA
P F
EE
T F
LU
SH
WIT
H
CA
ST
ING
BO
TT
OM
W/IN
D10D8
D7
2X
D9
0.0
0
4X
R1
CA
ST
AN
OD
E
AA D6
JK
LM
NP
QR
1.4
31
.50
1.4
61
.35
1.1
7.9
3.6
31
.38
1.5
01
.48
1.4
31
.35
1.2
51
.11
.87
36
.33
8.1
37
.13
4.3
29
.72
3.6
16
.03
5.1
38
.13
7.6
36
.33
4.3
31
.72
8.2
22
.1
D2
D5
0.0
0
7X
D2
D4
A
BC
DE F G H
J7X
D2
KL
MN P Q R
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MIL-DTL-18001L
21
FIGURE 8. Zinc hull slab (steel strap), type ZHC-23.
FIGURE 7. Zinc hull slab (steel strap), type ZHC-23.
DIM
IMP
ER
IAL
(IN
CH
)
ME
TR
IC
(MM
)
TA
BL
E O
F D
IME
NS
ION
S
D1
D2
6.0
0±.1
31
52
.4±3
.3
D3
D4
D5
D6
D7
D8
D1
0
D1
1
D1
2
12
.00
±.1
33
04
.8±3
.3
1.2
5±.1
33
1.8
±3
.3
8.0
0±.1
32
03
.2±3
.3
1.5
0±.1
33
8.1
±3
.3
2.0
0±.1
35
0.8
±3
.3
1.0
0±.0
62
5.4
±1
.5
.63
±.1
31
6.0
±3
.3
.25
+.1
3/-
.06
6.4
+3
.3/-
1.5
1.0
0±.0
62
5.4
±1
.5
2.0
0±.0
65
0.8
±1
.5S
KE
TC
H D
1:
HU
LL
SL
AB
(C
OR
E S
TR
AP
),
TY
PE
ZH
C-2
3,
1.2
5" T
HK
, 1
.00
" B
TM
C'S
INK
D9
.25
±.1
36
.4±3
.3
D1
3
D1
4
6.0
0±.0
61
52
.4±1
.5
1.5
6±.0
63
9.6
±1
.5
SE
CT
ION
A-A
D3
2X
ØD
12
2X
ØD
14
DR
AF
T
PE
RM
ITT
ED
D9
ST
EE
L C
OR
E2
X Ø
D1
1
D1
0
A
D1 2
AD
5
D1
TY
P,
MO
LD
RA
D
PE
RM
ITT
ED
D2
2X
ØD
8
D1
3D
7
D6
D4
1.
MIN
IMU
M W
EIG
HT
= 2
0.4
LB
/ 9
.3 K
G
2.
AN
OD
E M
AY
BE
CA
ST
WIT
H S
TR
AP
IN
TH
E U
P O
R
DO
WN
PO
SIT
ION
. A
LL D
IME
NS
ION
S R
EF
ER
TO
TH
E
WID
ER
AN
D L
ON
GE
R E
DG
ES
OF
TH
E A
NO
DE
S.
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MIL-DTL-18001L
22
FIGURE 9. Hull slab (steel core), type ZHC-23 with countersink for neoprene washer.
FIGURE 8. Hull slab (steel core), type ZHC-23 with countersink for neoprene washer.
DIM
IMP
ER
IAL
(IN
CH
)
ME
TR
IC
(MM
)
TA
BLE
OF
DIM
EN
SIO
NS
D1
D2
6.0
0±.1
3152
.4±3.3
D3
D4
D5
D6
D7
D8
D10
D11
D12
12.0
0±.1
3304
.8±3.3
1.2
5±.1
331.8
±3.3
8.0
0±.1
3203
.2±3.3
1.5
0±.1
338.1
±3.3
2.0
0±.1
350.8
±3.3
1.0
0±.0
625.4
±1.5
.63
±.1
316.0
±3.3
.25
+.1
3/-
.06
6.4
+3.3
/-1.5
1.5
0±.1
338.1
±3.3
2.0
0±.0
650.8
±1.5
SK
ET
CH
D2:
HU
LL
SL
AB
(S
TE
EL
CO
RE
), T
YP
E
ZH
C-2
3, 1.2
5" T
HK
, 1.5
0" B
TM
C'S
INK
D9
.25
±.1
36.4
±3.3
D13
D14
6.0
0±.0
6152
.4±1.5
1.5
6±.0
639.6
±1.5
SE
CT
ION
A-A
D3
2X
ØD
12
2X
ØD
14
DR
AF
T
PE
RM
ITT
ED
D9
ST
EE
L C
OR
E
2X
ØD
11, F
OR
NE
OP
RE
NE
WA
SH
ER
D10
A
D1 2
AD
5
D1
TY
P, M
OLD
RA
D
PE
RM
ITT
ED
D2
2X
ØD
8
D13
D7
D6
D4
D15
1.3
8±.0
635.0
±1.5
2X
ØD
15
1.
MIN
IMU
M W
EIG
HT
= 2
0.4
LB
/ 9
.3 K
G
2.
AN
OD
E M
AY
BE
CA
ST
WIT
H S
TR
AP
IN
TH
E U
P O
R
DO
WN
PO
SIT
ION
.
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MIL-DTL-18001L
23
FIGURE 10. Zinc, hull slab (steel core), type ZHC-42.
AD
5
D1
TY
P, M
OLD
RA
D
PE
RM
ITT
ED
D2
2X
ØD
8
D13
D7
D6
D4
1.
MIN
IMU
M W
EIG
HT
= 3
9 L
B / 1
7.7
KG
2.
AN
OD
E M
AY
BE
CA
ST
WIT
H E
XP
OS
ED
FA
CE
IN
TH
E
UP
OR
DO
WN
PO
SIT
ION
.
D9
.25±.1
36.4
±3.3
D13
D14
6.0
0±.0
6152.4
±1.5
1.5
6±.0
639.6
±1.5
SE
CT
ION
A-A
D3
2X
ØD
12
2X
ØD
14
DR
AF
T
PE
RM
ITT
ED
D9
ST
EE
L C
OR
E2X
ØD
11
D10
A
D1 2
FIGURE 9. Zinc, hull slab (steel core), type ZHC-42.
DIM
IMP
ER
IAL
(IN
CH
)
ME
TR
IC
(MM
)
TA
BL
E O
F D
IME
NS
ION
S
D1
D2
6.0
0±.1
3152.4
±3.3
D3
D4
D5
D6
D7
D8
D10
D11
D12
12.0
0±.1
3304.8
±3.3
2.5
0±.1
363.5
±3.3
8.0
0±.1
3203.2
±3.3
1.5
0±.1
338.1
±3.3
2.0
0±.1
350.8
±3.3
1.0
0±.0
625.4
±1.5
.63±.1
316.0
±3.3
.25
+.1
3/-
.06
6.4
+3.3
/-1.5
1.0
0±.0
625.4
±1.5
2.0
0±.0
650.8
±1.5
SK
ET
CH
D3:
HU
LL
SL
AB
(S
TE
EL
CO
RE
),
TY
PE
ZH
C-4
2, 2.5
0" T
HIC
K, 1.0
0" B
TM
C'S
INK
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MIL-DTL-18001L
24
FIGURE 11. Zinc, hull slab (steel core), type ZHC-42 with countersink for neoprene washer.
FIGURE 10. Zinc, hull slab (steel core), type ZHC-23.
DIM
IMP
ER
IAL
(IN
CH
)
ME
TR
IC
(MM
)
TA
BL
E O
F D
IME
NS
ION
S
D1
D2
6.0
0±.1
31
52
.4±3
.3
D3
D4
D5
D6
D7
D8
D1
0
D1
1
D1
2
12
.00
±.1
33
04
.8±3
.3
2.5
0±.1
36
3.5
±3
.3
8.0
0±.1
32
03
.2±3
.3
1.5
0±.1
33
8.1
±3
.3
2.0
0±.1
35
0.8
±3
.3
1.0
0±.0
62
5.4
±1
.5
.63
±.1
31
6.0
±3
.3
.25
+.1
3/-
.06
6.4
+3
.3/-
1.5
1.5
0±.1
33
8.1
±3
.3
2.0
0±.0
65
0.8
±1
.5
SK
ET
CH
D4
: H
UL
L S
LA
B (
ST
EE
L C
OR
E),
TY
PE
ZH
C-4
2,
2.5
0" T
HIC
K,
1.5
0" B
TM
C'S
INK
D9
.25
±.1
36
.4±3
.3
D1
3
D1
4
6.0
0±.0
61
52
.4±1
.5
1.5
6±.0
63
9.6
±1
.5
SE
CT
ION
A-A
D3
2X
ØD
12
2X
ØD
14
DR
AF
T
PE
RM
ITT
ED
D9
D1
0
A
D1 2
AD
5
D1
TY
P,
MO
LD
RA
D
PE
RM
ITT
ED
D2
2X
ØD
8
D1
3D
7
D6
D4
ST
EE
L C
OR
E
2X
ØD
11
, F
OR
NE
OP
RE
NE
WA
SH
ER
2X
ØD
15
D1
51
.38
±.0
63
5.0
±1
.51
.M
INIM
UM
WE
IGH
T =
39 L
B / 1
7.7
KG
2.
AN
OD
E M
AY
BE
CA
ST
WIT
H S
TR
AP
IN
TH
E U
P O
R
DO
WN
PO
SIT
ION
.
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MIL-DTL-18001L
25
FIGURE 12. Zinc, fairwater slab, pipe core (style A) ZEP (1" thick).
FIGURE 11. Zinc, fairwater slab, pipe core (style A) ZEP (1" thick).
DIMIMPERIAL
(INCH)
METRIC
(MM)
TABLE OF DIMENSIONS
D1
D2
D3
D4*
D5*
6.00±.13
1.00±.13
.13±.06
.62±.02
.84±.02
152.4±3.3
25.4±3.3
3.3±1.5
15.7±.5
21.3±.5
A
SKETCH E1: FAIRWATER SLAB,
STYLE A (PIPE CORE), TYPE ZEP, 1.00" THICKMINIMUM WEIGHT = 9 LB / 4.1 KG
SECTION A-A
MOLD RAD
PERMITTED
TYP
* CORRESPONDS TO ASTM A524
1/2" SCHED 40 OR BS EN 10305-1
22MM STEEL PIPE SIZES.
A
D1
D1
D1
2
D1
2
GROOVED, SERRATED,
OR THREADED
PLAIN STEEL
PIPE
ØD4
ØD5
2X D3D2
DRAFT
PERMITTED
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MIL-DTL-18001L
26
FIGURE 13. Zinc, fairwater slab, pipe core (style B), type ZEP (2" diameter, 1" thick).
D4**
D5**
.84±.02
.62±.02
21.3±.5
15.7±.5
DRAFT
PERMITTED
PLAIN STEEL
PIPE
ØD5
ØD4
D2
2X D3
MOLD RAD
PERMITTEDGROOVED, SERRATED,
OR THREADED
AA
LETTERING ON EXPOSED FACE
ØD1
FIGURE 13. Zinc, fairwater slab, pipe core (style B) ZEP (2" diameter, 1" thick).
DIMIMPERIAL
(INCH)
METRIC
(MM)
TABLE OF DIMENSIONS
D1
D2
D3
D4*
D5*
2.00±.13
1.00±.13
.13±.06
.68±.02
.42±.02
50.8±3.3
25.4±3.3
3.3±1.5
17.3±.5
10.7±.5
SKETCH F1: FAIRWATER SLAB, STYLE B,
2.0" DIAM (PIPE CORE), TYPE ZEP, 1.00" THICKMINIMUM WEIGHT = 0.79 LB / 0.35 KG
SECTION A-A
* CORRESPONDS TO ASTM A524
3/8" SCHED 80 OR BS EN 10305-1
18MM STEEL PIPE SIZES.
** CORRESPONDS TO ASTM A524
1/2" SCHED 40 OR BS EN 10305-1
22MM STEEL PIPE SIZES.
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MIL-DTL-18001L
27
FIGURE 14. Zinc, fairwater slab, pipe core (style B), type ZEP (3" diameter, 1" thick).
ØD
4
AA
ØD
1
PLA
IN S
TE
EL
PIP
E
GR
OO
VE
D,
SE
RR
AT
ED
,
OR
TH
RE
AD
ED
DR
AF
T
PE
RM
ITT
ED
LE
TT
ER
ING
ON
EX
PO
SE
D F
AC
E
SK
ET
CH
F2
: F
AIR
WA
TE
R S
LA
B,
ST
YL
E B
,
3.0
0" D
IAM
(P
IPE
CO
RE
), T
YP
E Z
EP
, 1.0
0"
TH
ICK
MIN
IMU
M W
EIG
HT
= 1
.78
LB
/ 0
.81 K
G
DIM
IMP
ER
IAL
(IN
CH
)
ME
TR
IC
(MM
)
TA
BLE
OF
DIM
EN
SIO
NS
D1
D2
D3
D4*
D5*
3.0
0±.1
3
1.0
0±.1
3
.13±.0
6
.68±.0
2
.42±.0
2
76.2
±3.3
25.4
±3.3
3.3
±1.5
17.3
±.5
10.7
±.5
*C
OR
RE
SP
ON
DS
TO
AS
TM
A524
3/8
" S
CH
ED
80 O
R B
S E
N 1
0305-1
18M
M S
TE
EL P
IPE
SIZ
ES
.
**C
OR
RE
SP
ON
DS
TO
AS
TM
A524
1/2
" S
CH
ED
40 O
R B
S E
N 1
0305-1
22M
M S
TE
EL P
IPE
SIZ
ES
.
D4**
D5**
.84±.0
2
.62±.0
2
21.3
±.5
15.7
±.5
FIGURE 14. Zinc, fairwater slab, pipe core (style B) ZEP (3" diameter, 1" thick).
SE
CT
ION
A-AØ
D5
D2
2X
D3
MO
LD
RA
D
PE
RM
ITT
ED
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MIL-DTL-18001L
28
FIGURE 15. Zinc, fairwater slab, pipe core (style B), type ZEP (4" diameter, 1" thick).
D2
2X
D3
MO
LD
RA
D
PE
RM
ITT
ED
AA
ØD
1
PL
AIN
ST
EE
L
PIP
E
DR
AF
T
PE
RM
ITT
ED
GR
OO
VE
D,
SE
RR
AT
ED
,
OR
TH
RE
AD
ED
LE
TT
ER
ING
ON
EX
PO
SE
D F
AC
E
SK
ET
CH
F3
: F
AIR
WA
TE
R S
LA
B, S
TY
LE
B,
4.0
0" D
IAM
(P
IPE
CO
RE
), T
YP
E Z
EP
, 1
.00
" T
HIC
KM
INIM
UM
WE
IGH
T =
3.1
9 L
B /
1.4
5 K
G
DIM
IMP
ER
IAL
(IN
CH
)
ME
TR
IC
(MM
)
TA
BL
E O
F D
IME
NS
ION
S
D1
D2
D3
D4
*
D5
*
4.0
0±.1
3
1.0
0±.1
3
.13
±.0
6
.68
±.0
2
.42
±.0
2
10
1.6
±3
.3
25
.4±3
.3
3.3
±1
.5
17
.3±.5
10
.7±.5
*C
OR
RE
SP
ON
DS
TO
AS
TM
A5
24
3/8
" S
CH
ED
80
OR
BS
EN
10
30
5-1
18
MM
ST
EE
L P
IPE
SIZ
ES
.
**C
OR
RE
SP
ON
DS
TO
AS
TM
A5
24
1/2
" S
CH
ED
40
OR
BS
EN
10
30
5-1
22
MM
ST
EE
L P
IPE
SIZ
ES
.
D4
**
D5
**
.84
±.0
2
.62
±.0
2
21
.3±.5
15
.7±.5
FIGURE 15. Zinc, fairwater slab, pipe core (style B) ZEP (4" diameter, 1" thick).
SE
CT
ION
A-A
ØD
5
ØD
4
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MIL-DTL-18001L
29
FIGURE 16. Zinc, fairwater slab, pipe core (style B), type ZEP (5" diameter, 1" thick).
PL
AIN
ST
EE
L
PIP
E
DR
AF
T
PE
RM
ITT
ED
D2
2X
D3
MO
LD
RA
D
PE
RM
ITT
ED
GR
OO
VE
D,
SE
RR
AT
ED
,
OR
TH
RE
AD
ED
AA
ØD
1
LE
TT
ER
ING
ON
EX
PO
SE
D F
AC
E
SK
ET
CH
F4
: F
AIR
WA
TE
R S
LA
B,
ST
YL
E B
,
5.0
0" D
IAM
(P
IPE
CO
RE
), T
YP
E Z
EP
, 1
.00
" T
HIC
KM
INIM
UM
WE
IGH
T =
4.9
LB
/ 2
.2 K
G
DIM
IMP
ER
IAL
(IN
CH
)
ME
TR
IC
(MM
)
TA
BL
E O
F D
IME
NS
ION
S
D1
D2
D3
D4
*
D5
*
5.0
0±.1
3
1.0
0±.1
3
.13
±.0
6
.68
±.0
2
.42
±.0
2
127±3.3
25.4
±3
.3
3.3
±1.5
17.3
±.5
10.7
±.5
*C
OR
RE
SP
ON
DS
TO
AS
TM
A524
3/8
" S
CH
ED
80
OR
BS
EN
103
05-1
18
MM
ST
EE
L P
IPE
SIZ
ES
.
**C
OR
RE
SP
ON
DS
TO
AS
TM
A524
1/2
" S
CH
ED
40
OR
BS
EN
103
05-1
22
MM
ST
EE
L P
IPE
SIZ
ES
.
D4
**
D5
**
.84
±.0
2
.62
±.0
2
21.3
±.5
15.7
±.5
FIGURE 16. Zinc, fairwater slab, pipe core (style B) type ZEP (5" diameter, 1" thick).
SE
CT
ION
A-AØD
5
ØD
4
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MIL-DTL-18001L
30
FIGURE 17. Zinc, fairwater slab, pipe core (style B), type ZEP (6" diameter, 1" thick).
SK
ET
CH
F5
: F
AIR
WA
TE
R S
LA
B, S
TY
LE
B,
6.0
0" D
IAM
(P
IPE
CO
RE
), T
YP
E Z
EP
, 1.0
0" T
HIC
KM
INIM
UM
WE
IGH
T =
7.2
LB
/ 3
.3 K
G
DIM
IMP
ER
IAL
(IN
CH
)
ME
TR
IC
(MM
)
TA
BL
E O
F D
IME
NS
ION
S
D1
D2
D3
D4
*
D5
*
6.0
0±.1
3
1.0
0±.1
3
.13
±.0
6
.68
±.0
2
.42
±.0
2
152.4
±3.3
25.4
±3
.3
3.3
±1
.5
17
.3±.5
10
.7±.5
*C
OR
RE
SP
ON
DS
TO
AS
TM
A52
4
3/8
" S
CH
ED
80
OR
BS
EN
103
05-1
18
MM
ST
EE
L P
IPE
SIZ
ES
.
**C
OR
RE
SP
ON
DS
TO
AS
TM
A52
4
1/2
" S
CH
ED
40
OR
BS
EN
103
05-1
22
MM
ST
EE
L P
IPE
SIZ
ES
.
D4
**
D5
**
.84
±.0
2
.62
±.0
2
21
.3±.5
15
.7±.5
FIGURE 17. Zinc, fairwater slab, pipe core (style B) type ZEP (6" diameter, 1" thick).
SE
CT
ION
A-AØ
D5
ØD
4D
RA
FT
PE
RM
ITT
ED
D2
2X
D3
MO
LD
RA
D
PE
RM
ITT
ED
PL
AIN
ST
EE
L P
IPE
AA LE
TT
ER
ING
ON
EX
PO
SE
D F
AC
E
ØD
1
GR
OO
VE
D,
SE
RR
AT
ED
,
OR
TH
RE
AD
ED
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MIL-DTL-18001L
31
FIGURE 18. Zinc, fairwater slab, pipe core (style B), type ZEP (9" diameter, 1" thick).
2X
ØD
4
2X
ØD
5D
RA
FT
PE
RM
ITT
ED
D2
4X
D3
2X
PL
AIN
ST
EE
L P
IPE
AA
LE
TT
ER
ING
ON
EX
PO
SE
D F
AC
E
D6
D7
2X
GR
OO
VE
D,
SE
RR
AT
ED
,
OR
TH
RE
AD
ED
ØD
1
SK
ET
CH
F6
: F
AIR
WA
TE
R S
LA
B, S
TY
LE
B,
9.0
0" D
IAM
(P
IPE
CO
RE
), T
YP
E Z
EP
, 1.0
0" T
HIC
KM
INIM
UM
WE
IGH
T =
16
LB
/ 7
.3 K
G
DIM
IMP
ER
IAL
(IN
CH
)
ME
TR
IC
(MM
)
TA
BL
E O
F D
IME
NS
ION
S
D1
D2
D3
D4
*
D5
*
9.0
0±.1
3
1.0
0±.1
3
.13
±.0
6
22
8.6
±3
.3
25
.4±3
.3
3.3
±1
.5
*C
OR
RE
SP
ON
DS
TO
AS
TM
A5
24
1/2
" S
CH
ED
40
OR
BS
EN
10
30
5-1
22
MM
ST
EE
L P
IPE
SIZ
ES
.
D6
D7
.84
±.0
2
.62
±.0
2
21
.3±.5
15
.7±.5
FIGURE 18. Zinc, fairwater slab, pipe core (style B), type ZEP (9" diameter, 1" thick).
SE
CT
ION
A-A
MO
LD
RA
D
PE
RM
ITT
ED
1.7
5±.0
64
4.5
±1
.5
3.5
0±.0
38
8.9
±.8
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MIL-DTL-18001L
32
FIGURE 19. Zinc, fairwater slab, pipe core (style B), type ZEP (11" diameter, 1" thick).
AA
D6
D7
ØD
1
2X
ØD
4
2X
GR
OO
VE
(S),
SE
RR
AT
ION
S,
OR
TH
RE
AD
S
LE
TT
ER
ING
ON
EX
PO
SE
D F
AC
E
2X
ØD
5
DR
AF
T
PE
RM
ITT
ED
2X
PL
AIN
ST
EE
L P
IPE
4X
D3
MO
LD
RA
D
PE
RM
ITT
ED
D2
SK
ET
CH
F9
: F
AIR
WA
TE
R S
LA
B, S
TY
LE
B,
11
.00
" D
IAM
(P
IPE
CO
RE
), T
YP
E Z
EP
, 1
.00
" T
HIC
KM
INIM
UM
WE
IGH
T =
24
LB
/ 1
0.9
KG
DIM
IMP
ER
IAL
(IN
CH
)
ME
TR
IC
(MM
)
TA
BL
E O
F D
IME
NS
ION
S
D1
D2
D3
D4
*
D5
*
11
.00
±.1
3
1.0
0±.1
3
.13
±.0
6
27
9.4
±3
.3
25
.4±3
.3
3.3
±1
.5
*C
OR
RE
SP
ON
DS
TO
AS
TM
A5
24
1/2
" S
CH
ED
40
OR
BS
EN
10
30
5-1
22
MM
ST
EE
L P
IPE
SIZ
ES
.
D6
D7
.84
±.0
2
.62
±.0
2
21
.3±.5
15
.7±.5
FIGURE 19. Aluminum, fairwater slab, pipe core (style B) AEP/LEP (11" diameter, 1" thick).
SE
CT
ION
A-A
1.7
5±.0
64
4.5
±1
.5
3.5
0±.0
38
8.9
±.8
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MIL-DTL-18001L
33
FIGURE 20. Zinc, fairwater slab, pipe core (style C) type ZEP.
AA
2X
GR
OO
VE
D, S
ER
RA
TE
D,
OR
TH
RE
AD
ED
DR
AF
T
PE
RM
ITT
ED
2X
ØD
72X
ØD
6
4X
D8
SK
ET
CH
G:
FA
IRW
AT
ER
SL
AB
,
ST
YL
E C
(P
IPE
CO
RE
), T
YP
E Z
EP
MIN
IMU
M W
EIG
HT
= 2
3 L
B /
10.5
KG
DIM
IMP
ER
IAL
(IN
CH
)
ME
TR
IC
(MM
)
TA
BLE
OF
DIM
EN
SIO
NS
D1
D2
D3
D6*
D7*
.13±.0
6
1.0
0±.1
3
3.0
6±.0
6
3.3
±1.5
25.4
±3.3
77.7
±1.5
*C
OR
RE
SP
ON
DS
TO
AS
TM
A524
1/2
" S
CH
ED
40 O
R B
S E
N 1
0305-1
22M
M S
TE
EL
PIP
E S
IZE
S.
D8
R1
.62±.0
2
.84±.0
2
15.7
±.5
21.3
±.5
FIGURE 19. Zinc, fairwater slab, pipe core (style C) type ZEP.
SE
CT
ION
A-A
.13±.0
63.3
±1.5
7.5
0±.1
2190.5
±3
D4
3.1
9±.0
681.0
±1.5
D5
6.3
75±.0
16
161.9
±.4
D2
2X
PLA
IN S
TE
EL
PIP
E
D5
TY
P, M
OLD
RA
D
PE
RM
ITT
ED
LE
TT
ER
ING
ON
EX
PO
SE
D F
AC
E
D4
R1
D1
D3
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MIL-DTL-18001L
34
FIGURE 21. Zinc, bar, pipe core type ZBP.
A A
D4
D1D3
PLAIN STEEL
PIPE
LETTERING ON EXPOSED FACE
D2
2
D2
D2
2D2
ØD5
ØD6
DRAFT
PERMITTED
TYP MOLD RAD
PERMITTED
FIGURE 21. Zinc, bar, pipe core type ZBP.
DIMIMPERIAL
(INCH)
METRIC
(MM)
TABLE OF DIMENSIONS
D1
D2
D3
D4
D5*
7.50±.13
2.00±.13
12.00±.13
2.25±.13
.62±.02
190.5±3.3
50.8±3.3
304.8±3.3
57.2±3.3
15.7±.5
SKETCH H1: BAR SHAPE (PIPE CORE),
TYPE ZBPMINIMUM WEIGHT = 8 LB / 3.6 KG
* CORRESPONDS TO ASTM A524
1/2" SCHED 40 OR BS EN 10305-1
22MM STEEL PIPE SIZES.
D6* .84±.02 21.3±.5
SECTION A-A
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MIL-DTL-18001L
35
FIGURE 22. Zinc, bar, steel core type ZBS.
FIGURE 22. Zinc, bar, steel strap core type ZBS.
DR
AF
T
PE
RM
ITT
ED
TY
P M
OL
D R
AD
PE
RM
ITT
ED
D2 2
D2
A
SE
CT
ION
A-A
A
HO
LE
DE
TA
IL AØD
14
ØD
13
D1
5
D1
6
DIM
IMP
ER
IAL
(IN
CH
)
ME
TR
IC
(MM
)
TA
BL
E O
F D
IME
NS
ION
S
D1
D2
D3
D4
D5
7.5
±.1
3
2.0
±.1
3
14
.0±.1
3
3.2
5±.1
3
1.2
5±.1
3
19
0.5
±3
.3
50
.8±3
.3
35
5.6
±3
.3
82
.6±3
.3
31
.7±3
.3
SK
ET
CH
H2
: B
AR
SH
AP
E (
ST
EE
L
ST
RA
P C
OR
E),
TY
PE
ZB
SM
INIM
UM
WE
IGH
T =
8.5
LB
/ 3
.8 K
G
D6
.28
5±.0
27
.2±.5
D7
D8
D9
2.2
8±.1
3
1.4
3±.1
3
12
.88
±.1
3
57
.9±3
.3
36
.3±3
.3
32
7.2
±3
.3
D8
PL
AIN
ST
EE
L
ST
RA
P
D1
3.8
1
+.0
6/-
.00
20
.6
+1
.5/-
.0
D1
4.6
25
+.0
30
/-.0
00
15
.9
+.8
/-.0
D1
5.1
2±.0
23
.0±.5
D1
6.0
8 M
IN2
.0 M
IN
R1
.18
MIN
4.6
MIN
4X
R1
D1
2
SE
CT
ION
B-B
D6D
7
D5
D1
D4
D3
D9
LE
TT
ER
ING
ON
EX
PO
SE
D F
AC
E
A
D2 2
D2
D1
0.2
8±.1
37
.1±3
.3
D1
0
.56
±.0
61
4.2
±1
.5
2X
D1
1
D1
11
.13
±.1
32
8.7
±3
.3
D1
2
B B
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MIL-DTL-18001L
36
FIGURE 23. Zinc, rod shape (no core), type ZRN.
NO
M P
IPE
SIZ
E
TA
BL
E O
F D
IME
NS
ION
S
1/8
1/4
3/8
1/2
3/4
.405
10.3
D1 (
INC
HE
S)
±0.0
20 IN
CH
D1 (
MM
)
±0.5
MM
NO
M W
T P
ER
FO
OT
LE
NG
TH
(LB
)
NO
M W
T P
ER
FO
OT
LE
NG
TH
(K
G)
.40
.18
.540
13.7
.71
.32
.675
17.1
1.1
0.5
0
.840
21.3
1.7
1.7
8
1.0
50
26.7
2.6
71.2
1
DE
TA
IL S
EC
T A
-A
A A
SP
EC
IFY
LE
NG
TH
36.0
0±.2
5"
(914±6M
M)
OR
72.0
0±.2
5"
(1828±6.3
5M
M)
ØD
1.2
5"
(6M
M)
SK
ET
CH
I:
RO
D S
HA
PE
(N
O C
OR
E),
TY
PE
ZR
N,
36
" L
ON
G O
R 7
2" L
ON
G
FIGURE 21. Zinc, rod shape (no core), type ZRN.
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MIL-DTL-18001L
37
FIGURE 24. Zinc, segmented disk assembly anode (interlocking core), type ZDM.
TH
RE
AD
SE
GM
EN
TS
IN
TO
EA
CH
OT
HE
R
TO
AC
HIE
VE
RE
QU
IRE
D L
EN
GT
H
TY
P D
ISK
SE
GM
EN
T W
ITH
TH
RE
AD
ED
CO
RE
, S
EE
SK
ET
CH
J2
AT
TA
CH
SE
GM
EN
TS
TO
SU
PP
OR
T P
LU
G,
US
E C
LA
SS
A P
LU
G (
SK
ET
CH
J3
) O
R
CL
AS
S B
PL
UG
(S
KE
TC
H J
4)
AS
RE
QU
IRE
D.
SK
ET
CH
J1
: S
EG
ME
NT
ED
DIS
K A
SS
EM
BL
Y A
NO
DE
(MA
CH
INE
-FO
RM
ED
IN
TE
RL
OC
KIN
G C
OR
ES
), T
YP
E Z
DM
FIGURE 22. Zinc, segmented disk assembly anode (interlocking cores), type ZDM.
1.
DIS
K S
EG
ME
NT
NO
MIN
AL
SIZ
E S
HA
LL M
AT
CH
NO
MIN
AL
SIZ
E O
F S
UP
PO
RT
PL
UG
US
ED
. S
EE
SK
ET
CH
ES
J2 -
J4.
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MIL-DTL-18001L
38
FIGURE 25. Zinc, segmented disk (interlocking thread core), type ZDM.
PR
ES
S F
IT S
TE
EL
TH
RE
AD
ED
CO
RE
INT
O Z
INC
DIS
K
ZIN
C D
ISK
.031
±.0
16
"
(.7
9±.4
0M
M)
#1
2-2
8U
NF
-2B
ØD
5,
ST
RA
IGH
T
KN
UR
L
US
E T
AP
ER
ST
YL
E
TA
P F
OR
IN
TR
F F
IT
D9x4
5°
TY
P
D6
2.3
9±.7
9
D7
.81
2
+.0
05
/-.0
00
20
.62
+.1
3/-
.00
.25±.0
66.4
±1.5
.016
±.0
04
.40±.1
0
.50 +
.12
/-.0
012
.7 +
3.0
/-0.0
0.3
2 +
.00/-
.04
8.1
+.0
/-.8
PL
UG
NO
M P
IPE
SIZ
E
TH
RE
AD
ED
CO
RE
DIM
S
1
D1
(IN
CH
)
D1
(MM
)D
2 (
INC
H)
.31
3
+.0
02/-
.00
0
D2
(M
M)
7.9
5
+.0
5/-
.00
QT
Y
PE
R
PK
G
PK
G
WT
(LB
S)
PK
G
WT
(KG
)
3/4
1/2
3/8
1.0
50
±.0
16
.825
±.0
16
.625
±.0
16
.500
±.0
16
26
.67
±.4
0
20
.96
±.4
0
15
.88
±.4
0
12
.70
±.4
0
.31
3
+.0
02/-
.00
0
.31
3
+.0
02/-
.00
0
.31
3
+.0
02/-
.00
0
7.9
5
+.0
5/-
.00
7.9
5
+.0
5/-
.00
7.9
5
+.0
5/-
.00
50
83.6
10
0
20
0
20
0
10
12 8
4.5
5.4
3.6
.75
0±.0
16
"
19.1
±.4
MM
ZIN
C D
ISK
ET
CH
LE
TT
ER
S "
ZD
M"
AN
D N
OM
SIZ
E
ØD
2
ØD
1
SK
ET
CH
J2:
SE
GM
EN
TE
D D
ISK
(IN
TE
RL
OC
KIN
G T
HR
EA
DE
D C
OR
E),
TY
PE
ZD
M
DIM
INC
HM
M
TH
RE
AD
ED
CO
RE
DIM
S
D3
D4
D5
.40 +
.04
/-.0
010
.2 +
1.0
/-0.0
FIGURE 23. Zinc, segmented disk (interlocking threaded core), type ZDM.
D6
D8
D9
D1
0
D1
1
.313
+.0
00
/-.0
02
7.9
5
+.0
0/-
.05
.32
0
+.0
30
/-.0
02
8.1
3
+.7
6/-
.05
.094
±.0
31
D7
D3
,
.34
0"
(8.6
4M
M)
MIN
FU
LL T
HD
D11
(F
UL
L
TH
D)
D1
0
D8
ØD
4
(ST
OC
K)
#1
2-2
8U
NF
-2A
TH
D C
OR
E,
CA
RB
ON
ST
EE
L,
AN
NE
AL
ED
Source: http://assist.dla.mil -- Downloaded: 2021-01-25T17:20ZCheck the source to verify that this is the current version before use.
MIL-DTL-18001L
39
FIGURE 26. Zinc, segmented disk support plug, class A (straight thread O-ring seal), type ZDM.
D10
D11
D12
R13
D14
NO
M 3
4"
(IN
CH
)N
OM
34"
(MM
)
NO
M 1
"
(IN
CH
)
NO
M 1
"
(MM
)
1116"-
12U
N-2
A1
116"-
12U
N-2
A1
516"-
12U
N-2
A1
516"-
12U
N-2
A
.500±.0
16
12.7
±.4
.500±.0
16
12.7
±.4
.06±.0
21.5
±.5
.06±.0
21.5
±.5
.625
±.0
16
15.8
7
±.4
0
.875
±.0
16
22.2
2
±.4
0
1.6
88
±.0
16
42.9
±.4
0
1.9
38
±.0
16
49.2
1
±.4
0
.53±.0
313.5
±.8
.53±.0
313.5
±.8
1.4
38
±.0
16
36.5
3
±.4
0
1.6
88
±.0
16
42.8
8
±.4
0
.06
+.0
3/-
.00
1.5
+.8
/-.0
.06
+.0
3/-
.00
1.5
+.8
/-.0
.188
±.0
16
4.7
8
±.4
0
.188
±.0
16
4.7
8
±.4
0
.938
±.0
16
23.8
3
±.4
0
1.1
88
±.0
16
30.1
8
±.4
0
.188
±.0
16
4.7
8
±.4
0
.188
±.0
16
4.7
8
±.4
0
.113
2.8
7
+.0
0/-
.12
.113
2.8
7
+.0
0/-
.12
.031
±.0
16
.79±.4
0.0
31
±.0
16
.79±.4
0
.125
±.0
16
3.1
8
±.4
0
.125
±.0
16
3.1
8
±.4
0
HE
X,
D5
AC
R F
LA
TS
2X
R13
63u
IN
1.6
uM
ET
CH
LE
TT
ER
S "
ZD
M"
AN
D N
OM
SIZ
E
D12
D14
7°
MA
X
BR
EA
K E
DG
E
D11
2X
D9
2X
D9
D6
D1
#1
2-2
8U
NF
-2B D4
6X
D3x45°
D2
ØD
7
ØD
10
2X
ØD
8
SK
ET
CH
J3:
SE
GM
EN
TE
D D
ISK
SU
PP
OR
T
PL
UG
, C
LA
SS
A (
ST
RA
IGH
T T
HD
O-R
ING
SE
AL
), F
OR
AN
OD
E T
YP
E Z
DM
FIGURE 24. Zinc, segmented disk support plug, class A (straight thread O-ring seal) type ZDM.
1.
SU
RF
AC
E F
INIS
H I
S 1
25 R
A M
ICR
O-I
NC
H (
3.2
MIC
RO
-ME
TE
R)
EX
CE
PT
AS
SH
OW
N.
2.
SP
EC
IFY
EIT
HE
R 3
4"
NO
MIN
AL O
R 1
" N
OM
INA
L S
IZE
.
DIM
CLA
SS
A P
LU
G D
IME
NS
ION
S
D1
D2
D3
D4
D5
D6
D7
D8
D9
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MIL-DTL-18001L
40
FIGURE 27. Zinc, segmented disk support plug, class B (tapered pipe thread), type ZDM.
SK
ET
CH
J4
: S
EG
ME
NT
ED
DIS
K S
UP
PO
RT
PL
UG
, C
LA
SS
B (
TA
PE
RE
D P
IPE
TH
RE
AD
),
FO
R A
NO
DE
TY
PE
ZD
M
FIGURE A-25. Zinc, segmented disk support plug, class B (tapered pipe thread) type ZDM.
1.
SU
RF
AC
E F
INIS
H IS
125 R
A M
ICR
O-I
NC
H (
3.2
MIC
RO
-ME
TE
R).
2.
ST
D T
OLE
RA
NC
E IS
±.0
16"
(±.4
0 M
M)
UN
LE
SS
OT
HE
RW
ISE
SP
EC
IFIE
D.
NO
M P
IPE
SIZ
E, (U
NIT
S)
CL
AS
S B
PL
UG
DIM
EN
SIO
NS
NO
M S
IZE
1 (
INC
H)
D1
D2
D3
D4
D5
D6
D7
NO
M S
IZE
1 (
MM
)
NO
M S
IZE
34 (
INC
H)
NO
M S
IZE
34 (
MM
)
NO
M S
IZE
12 (
INC
H)
NO
M S
IZE
12 (
MM
)
NO
M S
IZE
38 (
INC
H)
NO
M S
IZE
38 (
MM
)
1"-
11
12N
PT
1"-
11
12N
PT
34"-
14N
PT
34"-
14N
PT
12"-
14N
PT
12"-
14N
PT
38"-
18N
PT
38"-
18N
PT
1.3
15±.0
03
33.4
0±.0
8
1.0
50±.0
03
26.6
7±.0
8
.840±.0
03
21.3
4±.0
8
.675±.0
03
17.1
5±.0
8
.500
12.7
.375
9.5
3
.375
9.5
3
.313
7.9
5
.063
1.6
0
.063
1.6
0
.063
1.6
0
.063
1.6
0
1.5
00
38.1
0
1.2
50
31.7
5
1.0
00
25.4
0
.750
19.0
5
.188
4.7
8
.188
4.7
8
.125
3.1
8
.125
3.1
8
.53±.0
3
13.5
±.8
.53±.0
3
13.5
±.8
.53±.0
3
13.5
±.8
.53±.0
3
13.5
±.8
HE
X, D
5 A
CR
FLA
TS
#12-2
8U
NF
-2B
ØD
2
D7
6X
D4x45°
D1
PIP
E T
HR
EA
D
PE
R A
SM
E B
1.2
0.1
D3
D6
ET
CH
LE
TT
ER
S "
ZD
M"
AN
D N
OM
SIZ
E
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MIL-DTL-18001L
41
FIGURE 28. Zinc, mooring chain anodes (pipe core), type ZMP.
D7
FIGURE A-26. Zinc, mooring chain anodes (pipe core) type ZMP.
SK
ET
CH
K1:
MO
OR
ING
CH
AIN
AN
OD
ES
(PIP
E C
OR
E O
R P
IPE
BU
SH
ING
CO
RE
) T
YP
E Z
MP
1.
SE
E D
IME
NS
ION
S O
N S
KE
TC
H N
2.
2.
FO
R U
SE
ON
GR
AD
E F
M3 S
TU
D L
INK
CH
AIN
.
3.
EX
TE
RIO
R E
DG
ES
AN
D C
OR
NE
R R
AD
II O
F C
AS
T A
NO
DE
SH
ALL
BE
0.0
6 T
O 0
.19.
4.
PIP
E C
OR
E S
HA
LL
BE
9/1
6 IN
CH
TU
BIN
G X
0.0
83 W
ALL
CO
NF
OR
MIN
G T
O A
ST
M A
513, T
YP
E S
OR
3/8
ST
AN
DA
RD
SIZ
E P
IPE
CO
NF
OR
MIN
G T
O A
ST
M A
53/5
3M
GR
OO
VE
D,
SE
RR
AT
ED
,
OR
TH
RE
AD
ED
LE
TT
ER
ING
ON
EX
PO
SE
D
FA
CE
, S
HO
W A
CT
UA
L N
OM
SIZ
E.
2X
D4
R.1
2±.0
6"
(R6
±3
MM
)
TY
P
D6
Ø.4
23
" A
ST
M A
53
Ø1
0M
M B
S-E
N-1
03
05
-1
D2
D1 2
D1
CA
ST
AN
OD
E
D2 2
Ø.6
75
AS
TM
A53
Ø1
6M
M B
S-E
N-1
03
05
-1
ST
EE
L C
OR
E
2X
D5
D3
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MIL-
DTL
-
1222
K
DRA
FT
DAT
ED
29
Marc
h
2010
42
MIL-
DTL
-
1222
K
DRA
FT
DAT
ED
29
Marc
h
2010
MIL-
STD-
777F
(SH)
MIL-
STD-
777F
(SH)
MIL-
STD-
777F
(SH)
MIL-
STD-
777F
(SH)
MIL
-DT
L-1
80
01
L
MOORING CHAIN ANODE DIMENSIONS
NOM
chain
size
D1
(inch)
±0.12
D1
(mm)
±3.0
D2
(inch)
±0.06
D2
(mm)
±1.5
D3
(inch)
+0/-0.12
D3
(mm)
+0/-3.0
D4
(inch)
±0.06
D4
(mm)
±1.5
D5
(inch)
±0.06
D5
(mm)
±1.5
D6
(inch)
+0.06/-0
D6
(mm)
+1.5/-0
D7
(inch)
D7
(mm)
Approx
wt (lb)
Approx
wt (kg)
1¼ 2.5 63.50 1.19 30.23 0.12 3.05 0.5 12.70 0.12 3.05 0.58 14.73 0.06 1.52 0.28 0.13
1¾ 3.24 82.30 1.5 38.10 0.12 3.05 0.62 15.75 0.38 9.65 0.91 23.11 0.06 1.52 0.79 0.36
2 3.5 88.90 1.62 41.15 0.12 3.05 0.75 19.05 0.37 9.40 1.08 27.43 0.06 1.52 1.09 0.50
2¼ 3.5 88.90 1.75 44.45 0.3 7.62 0.75 19.05 0.37 9.40 1.2 30.48 0.09 2.29 1.38 0.62
2½ 3.5 88.90 1.94 49.28 0.3 7.62 0.75 19.05 0.5 12.70 1.33 33.78 0.09 2.29 1.69 0.77
2¾ 4 101.60 2.06 52.32 0.34 8.64 1 25.40 0.5 12.70 1.56 39.62 0.09 2.29 2.04 0.92
3 4.5 114.30 2.25 57.15 0.34 8.64 1.25 31.75 0.5 12.70 1.56 39.62 0.12 3.05 2.49 1.13
3½ 5.5 139.70 2.38 60.45 0.38 9.65 1.75 44.45 0.5 12.70 1.75 44.45 0.12 3.05 3.58 1.62
4 6 152.40 2.69 68.33 0.5 12.70 2 50.80 0.5 12.70 1.88 47.75 0.12 3.05 4.41 2.00
SKETCH K2: MOORING CHAIN ANODES (PIPE CORE) TYPE ZMP
1. See node views on sketch K1.
FIGURE 28. Zinc, mooring chain anodes (pipe core or pipe bushing core), type ZMP – Continued.
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MIL-DTL-18001L
43
FIGURE 29. Zinc plate shape (no core), type ZPN (0.50" thick).
SK
ET
CH
M1
: P
LA
TE
SH
AP
E (
NO
CO
RE
), T
YP
E Z
PN
,
0.5
0" T
HIC
KM
INIM
UM
WE
IGH
T =
14
8 L
B /
67
KG
DIM
IMP
ER
IAL
(IN
CH
)
ME
TR
IC
(MM
)
TA
BL
E O
F D
IME
NS
ION
S
D1
D2
D3
48.0
0±.2
5
24.0
0±.2
5
.50
±.0
6
1219
±6
.4
609.6
±6.4
12.7
±1
.5
FIGURE 27. Zinc plate shape (no core) type ZPN (0.50" thick).
D2 D3
D1
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MIL-DTL-18001L
44
FIGURE 30. Zinc plate shape (no core), type ZPN (1.00" thick)
SK
ET
CH
M2
: P
LA
TE
SH
AP
E (
NO
CO
RE
), T
YP
E Z
PN
,
1.0
0" T
HIC
KM
INIM
UM
WE
IGH
T =
296 L
B / 1
34 K
G
DIM
IMP
ER
IAL
(IN
CH
)
ME
TR
IC
(MM
)
TA
BL
E O
F D
IME
NS
ION
S
D1
D2
D3
48
.00±.2
5
24
.00±.2
5
1.0
0±.1
3
12
19±6
.4
60
9.6
±6.4
25
.4±3.3
FIGURE 28. Zinc plate shape (no core) type ZPN (1.00" thick).
D2 D3
D1
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MIL-DTL-18001L
45
Custodians: Preparing activity:
Army – AT Navy – SH
Navy – SH (Project 5342-2011-001)
Air Force – 99
Review activities:
Army – CR4
Navy – CE, OS, YD
Air Force – 71
DLA – IS
NOTE: The activities listed above were interested in this document as of the date of this document. Since
organizations and responsibilities can change, you should verify the currency of the information above using the
ASSIST Online database at https://assist.dla.mil.
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