BAPPG r o u p o f C o m p a n i e s

BAPPG r o u p o f C o m p a n i e s

Pre-Load Bolt AssembliesBS EN 14399 Parts 1 to 8

CE Requirements

BAPPG r o u p o f C o m p a n i e s

This standard refers to assemblies that require a specific tightening load and replaces previous standards BS 4395 Parts 1 & 2 and Din 6914. This standard must be adheard to on all manufactured product after October 2007. Any products produced previously to BS 4395 Parts 1 & 2 and Din 6914 can still be sold as pre-loadable bolts.

These products manufactured to BS EN 14399 must comply with the construction directive 89/106/EEC which requires that all products are CE approved and marked. Bapp Group Limited have decided that the method of CE marking will be done by using a label clearly showing the CE mark.

Pre-Load Bolt AssembliesBS EN 14399 Parts 1 & 2

BS EN 14399PART ONE

General Requirements

BS EN 14399PART TWO

Suitability test for preloading(assembly test)*

BS EN 14399 PART THREE

Hexagon Bolt and Nut Assemblies (HR 8.8 and 10.9)

BS EN 14399 PART FOUR

Hexagon Bolt and Nut Assemblies (HV 10.9)

BS EN 14399PART FIVE

Plain Washers

BS EN 14399 PART SIX

Plain Chamfered Washers

BS EN 14399PART SEVEN

Countersunk Bolts and Nuts Assemblies HR 8.8 and 10.9

BS EN 14399PART EIGHT

Hexagon Fit Bolts and Nuts HV 10.9

BS EN 14399 currently has 8 parts to the standard, this is now under review to add the following.

BS EN 14399PART NINE

Direct Tension Indicators

BS EN 14399PART TEN

Tension Control Bolts

* These 2 additions will be published in 2009

CE Requirements

* The suitability test is required to allow the CE approval.

HEAD MARKINGSBS EN 14399 PART THREE HR 8.8

Note - The 8.8 HR,10.9 HR, 8 HR and 10 HR means that the product was manufactured to BS EN 14399-3.

BAPPG r o u p o f C o m p a n i e s

Stockists of Industrial Fasteners, Engineering Supplies and Health & Safety Products

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BDL

BG

BDL

BG

BDL

BG

BDL

BG

10 HR

10 HR

BDL

BG

10.9 HR

10.9 HR

BAPPG r o u p o f C o m p a n i e s

High Strength Preloadable Bolt HR System

BS EN 14399 Part 3 - Dimensions of Hexagon Head Bolt

S

e

S

e

BS EN 14399Part 3

da df

d

30o

45o

Rad r

k Lengthc

Length

Rad. approx. 11/4 d

d

BDL BDL

8.8 HR 10.9 HR

BS EN 14399Part 3

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Nominal size and thread diameter d

Pitch of thread p

Diameter of unthreaded shank da

Width across flats s

Width across corners e

Diameter of washer facedf

Depth of washer face c

Radius under headr

Transitiondiameter da

Thickness of headk

(coarse pitch series) max. min. max. min. max. min. max. min. max. max. min. max. max. min.

M12a 1.75 12.70 11.30 22.00 21.16 25.40 23.91 22.00 20.10 0.8 1.60 1.20 15.20 7.95 7.05

M16 2.0 16.70 15.30 27.00 26.16 31.20 29.56 27.00 24.90 0.8 1.60 1.20 19.20 10.75 9.25

M20 2.5 20.84 19.16 32.00 31.00 36.90 35.03 32.00 29.30 0.8 1.80 1.50 24.40 13.40 11.60

M22 2.5 22.84 21.16 36.00 35.00 41.60 39.55 36.00 33.30 0.8 1.80 1.50 26.40 14.90 13.10

M24 3.0 24.84 23.16 41.00 40.00 47.30 45.20 41.00 38.00 0.8 1.80 1.50 28.40 15.90 14.10

M27 3.0 27.84 26.16 46.00 45.00 53.10 50.85 46.00 42.80 0.8 2.50 2.00 32.40 17.90 16.10

M30 3.5 30.84 29.16 50.00 49.00 57.70 55.37 50.00 46.60 0.8 2.50 2.00 35.40 19.75 17.65

M36 4.0 37.00 35.00 60.00 58.80 69.30 66.44 60.00 55.90 0.8 2.50 2.00 42.40 23.55 21.45

a Non-preferred. Only to be used for the lighter type of construction where practical conditions, such as material thickness, do not warrant the usage of a larger size bolt than M12.

Standard Specification: BS EN 14399:2005 Part 3Material: High Tensile Steel

Strenght Grade: 8.8, 10.9Screw Thread: 6G of ISO 965/2Surface Finish: Black, Electro Galvanized, Dacromet

Hot Dipped Galvanized, Sherardised

BAPPG r o u p o f C o m p a n i e s

Bolt/Nut/Washer Assembly System HR

General Requirements EN 14399-1

Bolt/Nut Assembly EN 14399-3

Marking HR

Property Classes 8.8/8 10.9/10

Washer(s) EN 14399-5 or EN 14399-6

Marking H

Suitable test for preloading EN 14399-2

Specifications for bolts and reference standards

Material Steel

General Requirements EN 14399-1

ThreadTolerance 6ga

International Standards ISO 261, ISO 965-2

Mechanical PropertiesProperty Class 8.8 or 10.9

European Standard EN ISO 898-1

Impact Strength

Value KV. min = 27 J at - 20oC

Test Piece b ISO 148

Test EN 10045-1

Tolerances

Product Grade C except: dimensions c and rTolerance for lengths r 160mm 4.0mm

International Standards EN ISO 4759-1

Surface Finish

Normal as processedc

Hot Dip Galvanized EN ISO 10684d

Others To be agreede

Surface Discontinuities Limits to surface discontinuities as specified in EN 26157-1

Acceptability For acceptance procedure, see EN ISO 3269

a The tolerance class specified applies before hot-dip galvanizing. Hot-dip galvanized bolts are intended for assembly with oversize tapped nuts.

b The location of the V-notch test pieces in the bolt shall be as specified in EN ISO 898-1.

c As processed means the normal finish resulting from manufacture with a light coating of oil.

d Attention is drawn to the need to consider the risk of hydrogen embrittlement in the case of bolts of property class 10.9, when selecting an appropriate surface treatment process (e.g. cleaning and coating), see the relevant coating standards.

e Other coatings may be negotiated between the purchaser and the manufacturer provided they do not impair the mechanical properties or the functional characteristics. Coatings of cadmium or cadmium alloys are not permitted.

S

eBG

8.8 HR

BS EN 14399Part 3

S

eBG

10.9 HR

BS EN 14399Part 3

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BAPPG r o u p o f C o m p a n i e s

High Strength Preloadable Nut HR System

S

e

S

BS EN 14399Part 3

BDL BDL

8 HR 10 HR

BS EN 14399Part 3

1 2 3 4 5 6 7 8 9 10 11 12

Nominal size and thread diameter d

Pitch of thread p

Width across flats s

Width across corners e

Diameter of washer face dw

Depth of washer face c

Thickness of nut m

Tolerance on squareness

(Coarse pitchseries) max. min. max. min. max. min. max. max. min. max.

M12a 1.75 22.00 21.16 25.40 23.91 22.00 20.10 0.8 10.80 10.37 0.38

M16 2.0 27.00 26.16 31.20 29.56 27.00 24.90 0.8 14.80 14.10 0.47

M20 2.5 32.00 31.00 36.90 35.03 32.00 29.50 0.8 18.00 16.90 0.58

M22 2.5 36.00 35.00 41.60 39.55 36.00 33.30 0.8 19.40 18.10 0.63

M24 3.0 41.00 40.00 47.30 45.20 41.00 38.00 0.8 21.50 20.20 0.72

M27 3.0 46.00 45.00 53.10 50.85 46.00 42.80 0.8 23.80 22.50 0.80

M30 3.5 50.00 49.00 57.70 55.37 50.00 46.60 0.8 25.60 24.30 0.87

M36 4.0 60.00 58.80 69.30 66.44 60.00 55.90 0.8 31.00 29.40 1.05

a Non-preferred. Only to be used for the lighter type of construction where practical conditions, such as material thickness, do not warrant the usage of a larger size bolt than M12.

Dimensions of Hexagon Nuts

Standard Specification: BS EN 14399 Part 3Material: High Tensile Steel

Strenght Grade: 8, 10Screw Thread: Conforms to Class 6H or 6AZ

of ISO 965/2 Coarse SeriesSurface Finish: Black, Electro Galvanized, Dacromet

Hot Dipped Galvanized, Sherardised

BAPPG r o u p o f C o m p a n i e s

Specifications for nuts and reference standards

Material Steel

General Requirements EN 14399-1

Thread

Tolerance 6H or 6AZ

International Standards ISO 261, ISO 965-2, ISO 965-5

Mechanical ProperiesProperty Class 8a or 10a

European Standard EN 20898-2

TolerancesProduct Grade B except dimensions m and c

International Standard EN ISO 4759-1b

Surface Finish

Normal As processedc

Hot Dip Galvanized EN ISO 10684

Others To be agreedd

Surface Discontinuities Limits for surface discontinuities as specified in EN 493

Acceptability For acceptance procedure, see EN ISO 3269

a For proof load values, see 4.3. All other mechanical properties as specified in EN 20898-2.

b Except tolerance on perpendicularity of bearing face. see tolerance / in Table 4.

c As processed means the normal finish resulting from manufacture with a light coating of oil.

d Other coatings may be negotiated between the purchaser and the manufacturer provided they do not impair the mechanical properties or the functional characteristics. Coatings of cadmium or cadmium alloys are not permitted.

Thread d Nominalstress area of standard test mandrel As

property class

8 10

Toleranceclass6H or 6AZ

Toleranceclass6H or 6AZ

mm2 Proof load (As x Sp), N

M12 84.3 84 300 97 800

M16 157 157 000 182 100

M20 245 245 000 284 200

M22 303 303 000 351 200

M24 353 353 000 409 500

M27 459 459 000 532 400

M30 561 561 000 650 800

M36 817 817 000 947 700

Note: The proof load values are based on the following stresses under proof load:

- For nuts of property class 8: 1 000 N/mm2

- For nuts of property class 10: 1 160 N/mm2

30o

m

c

dw

S

e

BG

8 HR

BS EN 14399Part 3

S

e

BG

10 HR

BS EN 14399Part 3

e

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BAPPG r o u p o f C o m p a n i e s

High Strength Preloadable Bolt HV System

BS EN 14399 Part 4 - Dimensions of Hexagon Head Bolt

S

e

Length

Rad. approx. 11/4 d

d

da df

d

30o

45o

Rad r

k Lengthc

BDL

10.9 HV

BS EN 14399Part 4

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Nominal size and thread diameter d

Pitch of thread p

Diameter of unthreaded shank d

Width across flats s

Width across corners e

Diameter of washer facedf

Depth of washer face c

Radius under headr

Transitiondiameter da

Thickness of headk

(coarse pitch series) max. min. max. min. max. min. max. min. max. max. min. max. max. min.

M12 1.75 12.70 11.30 22.00 21.16 25.40 23.91 22.00 20.10 0.6 1.60 1.20 15.20 8.45 7.55

M16 2.0 16.70 15.30 27.00 26.16 31.20 29.56 27.00 24.90 0.6 1.60 1.20 19.20 10.75 9.25

M20 2.5 20.84 19.16 32.00 31.00 36.90 35.03 32.00 29.50 0.8 1.80 1.50 24.00 13.90 12.10

M22 2.5 22.84 21.16 36.00 35.00 41.60 39.55 36.00 33.30 0.8 1.80 1.50 26.00 14.90 13.10

M24 3.0 24.84 23.16 41.00 40.00 47.30 45.20 41.00 38.00 0.8 1.80 1.50 28.00 15.90 14.10

M27 3.0 27.84 26.16 46.00 45.00 53.10 50.85 46.00 42.80 0.8 2.50 2.00 32.00 17.90 16.10

M30 3.5 30.84 29.16 50.00 49.00 57.70 55.37 50.00 46.60 0.8 2.50 2.00 35.00 20.05 17.95

M36 4.0 37.00 35.00 60.00 58.80 69.30 66.44 60.00 55.90 0.8 2.50 2.00 41.00 24.05 21.95

Standard Specification: BS EN 14399:2005 Part 4Material: High Tensile Steel

Strenght Grade: 10.9Screw Thread: 6G of ISO 965/2Surface Finish: Black, Electro Galvanized, Dacromet

Hot Dipped Galvanized, Sherardised

BAPPG r o u p o f C o m p a n i e s

Specifications for bolts and reference standards

Material Steel

General Requirements EN 14399-1

ThreadTolerance 6ga

International Standards ISO 261, ISO 965-2

Mechanical PropertiesProperty Class 10.9

European Standard EN ISO 898-1

Impact Strength

Value KV. min = 27 J at - 20oC

Test Piece b ISO 148

Test EN 10045-1

TolerancesProduct Grade

C except: dimensions c and rTolerance for

lengths r 155mm:

International Standards EN ISO 4759-1

Surface Finish

Normal as processedc

Hot Dip Galvanized EN ISO 10684d

Others To be agreede

Surface Discontinuities Limits to surface discontinuities as specified in EN 26157-1

Acceptability For acceptance procedure, see EN ISO 3269

Bolt/Nut/Washer Assembly System HV

General Requirements EN 14299-1

Bolt/Nut Assembly EN 14399-4

Marking HV

Property Classes 10.9/10

Washer(s) EN 14399-5 or EN 14399-6

Marking H

Suitable test for preloading EN 14399-2

a The tolerance class specified applies before hot-dip galvanizing. Hot-dip galvanized bolts are intended for assembly with oversize tapped nuts.

b The location of the V-notch test pieces in the bolt shall be as specified in EN ISO 898-1.

c As processed means the normal finish resulting from manufacture with a light coating of oil.

d Attention is drawn to the need to consider the risk of hydrogen embrittlement in the case of bolts of property class 10.9, when selecting an appropriate surface treatment process (e.g. cleaning and coating), see the relevant coating standards.

e Other coatings may be negotiated between the purchaser and the manufacturer provided they do not impair the mechanical properties or the functional characteristics. Coatings of cadmium or cadmium alloys are not permitted.

+IT 17- 1/2 IT 17

S

eBG

10.9 HV

BS EN 14399Part 4

Page 4

BAPPG r o u p o f C o m p a n i e s

SE

d

BG

10 HV

BS EN 14399Part 4

1 2 3 4 5 6 7 8 10 11

Nominal size and thread diameter d

Pitch of thread p

Width across flats s

Width across corners e

Diameter of washer face dw

Thickness of nut m

(Coarse pitch series) max. min. max. min. max. min. max. min.

M12 1.75 22.00 21.16 25.40 23.91 22.00 20.10 10.00 9.64

M16 2.0 27.00 26.16 31.20 29.56 27.00 24.90 13.00 12.30

M20 2.5 32.00 31.00 36.90 35.03 32.00 29.50 16.00 14.90

M22 2.5 36.00 35.00 41.60 39.55 36.00 33.30 18.00 16.90

M24 3.0 41.00 40.00 47.30 45.20 41.00 38.00 20.00 18.70

M27 3.0 46.00 45.00 53.10 50.85 46.00 42.80 22.00 20.70

M30 3.5 50.00 49.00 57.70 55.37 50.00 46.60 24.00 22.70

M36 4.0 60.00 58.80 69.30 66.44 60.00 55.90 29.00 27.70

Dimensions of Hexagon Nuts

Standard Specification: BS EN 14399 Part 4Material: High Tensile Steel

Strenght Grade: 10Screw Thread: Conforms to Class 6H or 6AZ

of ISO 965/2 Coarse SeriesSurface Finish: Black, Electro Galvanized, Dacromet

Hot Dipped Galvanized, Sherardised

BAPPG r o u p o f C o m p a n i e s

High Strength Preloadable Nut HV System

Specifications for nuts and reference standards

Material Steel

General Requirements EN 14399-1

Thread

Tolerance 6H or 6AZ

International Standards ISO 261, ISO 965-2, ISO 965-5

Mechanical ProperiesProperty Class 10

European Standard EN 20898-2

TolerancesProduct Grade B

International Standard EN ISO 4759-1

Surface Finish

Normal As processeda

Hot Dip Galvanized EN ISO 10684b

Others To be agreedc

Surface Discontinuities Limits for surface discontinuities as specified in EN 493

Acceptability For acceptance procedure, see EN ISO 3269

a As processed means the normal finish resulting from manufacture with a light coating of oil.

b Attention is drawn to the need to consider the risk of hydrogen embrittlement in the case of bolts of property class 10.9, when selecting an appropriate surface treatment process (e.g. cleaning and coating), see the relevant coating standards.

c Other coatings may be negotiated between the purchaser and the manufacturer provided they do not impair the mechanical properties or the functional characteristics. Coatings of cadmium or cadmium alloys are not permitted.

S

BDL

10 HV

BS EN 14399Part 4

Page 5

BAPPG r o u p o f C o m p a n i e s

Preloadable Hardened Washer

1 2 3 4 5 6 7

Nominal size and thread diameter d

Inside diameter B Outside diameter C Thickness Amax. min. max. min. max. min.

M12 13.27 13.00 24.00 23.48 3.3 2.7

M16 17.27 17.00 30.00 29.48 4.3 3.7

M20 21.33 21.00 37.00 36.38 4.3 3.7

M22 23.33 23.00 39.00 38.38 4.3 3.7

M24 25.33 25.00 44.00 43.38 4.3 3.7

M27 28.52 28.00 50.00 49.00 5.6 4.4

M30 31.62 31.00 56.00 54.80 5.6 4.4

M36 37.62 37.00 66.00 64.80 6.6 5.4

Dimensions

Standard Specification: BS EN 14399 Part 5Material: Hardenable Steel

Material Properties: 300 - 370 HVSurface Finish: Black, Electro Galvanized, Dacromet

Hot Dipped Galvanized, Sherardised CB

BDL

H

Preloadable Hardened Washer

Standard Specification: BS EN 14399 Part 6Material: Hardenable Steel

Material Properties: 300 - 370 HVSurface Finish: Black, Electro Galvanized, Dacromet

Hot Dipped Galvanized, Sherardised

1 2 3 4 5 6 7

Nominal size and thread diameter d

Inside diameter B Outside diameter C Thickness Amax. min. max. min. max. min.

M12 13.27 13.00 24.00 23.48 3.3 2.7

M16 17.27 17.00 30.00 29.48 4.3 3.7

M20 21.33 21.00 37.00 36.38 4.3 3.7

M22 23.33 23.00 39.00 38.38 4.3 3.7

M24 25.33 25.00 44.00 43.38 4.3 3.7

M27 28.52 28.00 50.00 49.00 5.6 4.4

M30 31.62 31.00 56.00 54.80 5.6 4.4

M36 37.62 37.00 66.00 64.80 6.6 5.4

Dimensions

Specifications and reference standards

Material Steel

General Requirements EN 14399-1

Mechanical Properties Hardness range 300 HR to 370 HV

TolerancesProduct grade A

International Standard EN ISO 4759-3

Surface finish

Normal as processeda

Hot dip galvanized EN ISO 10684b

Others to be agreedc

Workmanship Parts shall be uniform and free of irregularities or detrimental defects. No protruding burrs shall appear on the washer.

Acceptability For acceptance procedure, see EN ISO 3269

a As processed means the normal finish resulting from manufacture with a light coating of oil.

b Attention is drawn to the need to consider the risk of hydrogen embrittlement in the case of bolts of property class 10.9, when selecting an appropriate surface treatment process (e.g. cleaning and coating), see the relevant coating standards.

c Other coatings may be negotiated between the purchaser and the manufacturer provided they do not impair the mechanical properties or the functional characteristics. Coatings of cadmium or cadmium alloys are not permitted.

Bolt/Nut/Washer Assembly System HV

General Requirements EN 14299-1

Bolt/Nut Assembly EN 14399-4

Marking HV

Property Classes 10.9/10

Washer(s) EN 14399-5 or EN 14399-6

Marking H

Suitable test for preloading EN 14399-2

Bolt/Nut/Washer Assembly System HR

General Requirements EN 14399-1

Bolt/Nut Assembly EN 14399-3

Marking HR

Property Classes 8.8/8 10.9/10

Washer(s) EN 14399-5 or EN 14399-6

Marking H

Suitable test for preloading EN 14399-2

CB

BG

H

CB

BDL

H

CB

BG

H

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