is 15569 (2005): widening test on nuts - public.resource.org · 2018. 11. 14. · is 15569:2005 iso...
TRANSCRIPT
Disclosure to Promote the Right To Information
Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.
इंटरनेट मानक
“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda
“Invent a New India Using Knowledge”
“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru
“Step Out From the Old to the New”
“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan
“The Right to Information, The Right to Live”
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”
“Invent a New India Using Knowledge”
है”ह”ह
IS 15569 (2005): Widening test on nuts [PGD 31: Bolts, Nutsand Fasteners Accessories]
IS 15569:2005ISO 10484:1997
Wwfkm-m
i’iwkl-l-?@MJT
Indian Standard
WIDENING TEST ON NUTS
ICS 21.060.20
.
@ BIS 2005
BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002
March 2005 Price Group 2
.
- ..:
Bolts, Nuts and Fasteners Accessories Sectional Committee, MGP 33
NATIONAL FOREWORD
This Indian Standard (Second Revision) which is identical with ISO 10484:1997 ‘Widening test on nuts’issued by the International Organization for Standardization (ISO) was adopted by the Bureau of IndianStandards on the recommendations of the Bolts, Nuts and Fasteners Accessories Sectional Committeeand approval of the Medical Instruments, General and Production Engineering Division Council.
The text ofdeviations.Standards.
a)
b)
ISO Standard has been approved as suitable for publication as an Indian Standard withoutCertain terminology and conventions are, however, not identical to those used in IndianAttention is drawn especially to the following:
Wherever the words ‘International Standard’ appear referring to this standard, they shouldbe read as ‘Indian Standard’.
Comma (,) has been used as a decimal marker while in Indian Standards, the current practiceis to use a point (.) as the decimal marker.
In this adopted standard, reference appears to certain International Standards for which Indian Standardsalso exist. The corresponding Indian Standards, which are to be substituted in their place, are listedbelow along with their degree of equivalence for the editions indicated:
International Standard
ISO 898-2 : 1992 Mechanicalproperties of fasteners — Part 2:Nuts with specified proof loadvalues — Coarse thread
ISO 898-6 : 1994 Mechanicalproperties of fasteners — Part 6:Nuts with specified proof loadvalues — Fine pitch thread
ISO 2320:1997 Prevailing torquetype steel hexagon nuts —Mechanical and performanceproperties
ISO 6157-2:1995 FastenersSurface discontinuities — Part 2:Nuts
Corresponding Indian Standard Degree ofEquivalence
IS 1367 (Part 6): 1994 Technical supply Identical ~‘conditions for threaded steel fasteners:Part 6 Mechanical properties and testmethods for nuts with specified proof loads(third revision)
IS 13096:2000 Fasteners — Hexagon nutswith specified proof load values — Finepitch threads — Mechanical properties (first
revision)
IS 1367 (Part 8) :2002 Technical supplyconditions for threaded steel fasteners:Part 8 Prevailing torque type steel hexagonnuts — Mechanical and performanceproperties (third revision)
IS 1367 (Part 10) :2002 Technical supply doconditions for threaded steel fasteners:Part 10 Surface discontinuities — Nuts
do
do
(third revision)
For the purpose of deciding whether a particular requirement of this standard is complied with, the finalvalue, observed or calculated, expressing the result of a test, shall be rounded off in accordance withIS 2:1960 ‘Rules for rounding off numerical values (revised)’. The number of significant places retainedin the rounded off value should be the same as that of the specified value in this standard.
IS 15569:2005ISO 10484:1997
Indian Standard
WIDENING TEST ON NUTS
1 Scope
This International Standard specifies the test procedure for evaluating the acceptability of surfacediscontinuities designated in ISO 6157-2 excluding nuts made of free cutting steel.
It applies to nuts with
- property classes to ISO 898-2 and ISO 898-6;
—nominal thread diameter, d, from 5 mm up to and including 39 mm;
- product grades A and B.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of thisInternational Standard. At the time of publication, the editions indicated were valid. All standards are subjectto revision, and parties to agreements based on this International Standard are encouraged to investigate thepossibility of applying the most recent editions of the standards indicated below. Members of IEC and ISOmaintain registers of currently valid International Standards.
ISO 898-2:1992, Mechanical properties of fasteners - Part 2: Nuts with specified proof /oad values - Coarsethread.
ISO 898-6:1994, Mechanical propeffies of fasteners - Part 6: Nuts with specified proof load values - Fine pitchthread.
ISO 2320:1997, Prevailing torque type steel hexagon nuts - Mechanical and performance properties,
ISO 6157-2:1995, Fasteners - Surface discontinuities - Part 2: Nuts.
3 Widening test
3.1 Principle
After removal of the thread up to the nominal thread diameter a tapered mandrel is pushed into the nut.
The widening is measured as a percentage of the hole diameter.
3.2 Test mandrel
The test mandrel shown in figure 1 shall be used for measurement of widening of 6 ‘Y. or 4 % respectively (seeclause 4). It shall have a minimum hardness of not less than 45 HRC and the cone shall be polished
{roughness R.= 2,5 urn).
3.3 Test nut
The nut to be subjected to the widening test shall have the thread removed to a diameter equal to the nomina,diameter of the thread with the tolerance H12.
1
,.
IS 15569:20051s0 10484:1997
3.4 Procedure
Prior to the test, lubricate the mandrel with molybdenum disulphide (MoS,).
Insert the mandrel into the nut as shown in figure 2 and apply a load axially in a slow and continuous manneruntil the mandrel is pushed through the hole up to the cylindrical part. The mandrel shall be tightly clamped atthe upper end. For reference purposes the speed of insertion shall not exceed 25 mm/min.
4 Criteria .
The total widening of nuts shall be
6 % for nuts of property classes 4 to 12
and
4 % for nuts of property classes 04 and 05.
Failure of a nut occurs when the wall of the nut breaks entirely before the minimum specified widening valueis obtained. In cases of doubt, the fracture may be recognized when the nut is cut on the opposite side andthen falls into two single parts.
5 Special case - Prevailing torque type nuts
For prevailing torque type nuts according to ISO 2320 the minimum value of widening shall be 20 ‘?XO below thevalues for hexagon nuts specified in 4.
t
2
IS 15569:2005
ISO 10484:1997
Tolerances in millimetres
0,03
+PI +E
u-l--
dhll
1) d k the nominal thread diameter of the nut. Forthe testing of oversize tapped nuts the dimension dshall be enlarged according to the major diameter ofthe internal thread.
2) m is the nominal height of the nut.
Figure 1 — Test mandrel for wideningof nuts up to 6 % (1,06 d)
or up to 4 % (1,04 d) respectively
Tolerances in millimetres
i/=11
IQ+’J’’)’”
1)F k the load.
2) Hardened.
3) d k the nominal thread diameter of the nut.
Figure 2 — Test assembly
3
Bureau of Indian Standards
BI S is a statutory institution established under t he Bureau of /ndian Sfarrdards Act, 1986 to promote
harmonious development of the activities of standardization, marking and quality certification of
goods and attending to connected matters in the country.
Copyright
BIS has the copyright of all its publications. No part of these publications may be reproduced in any
form without the prior permission in writing of BIS. This does not preclude the free use, in the course
of implementing the standard, of necessary details, such as symbols and sizes, type or grade
designations. Enquiries relating to copyright be addressed to the Director (Publication), BIS.
Review of Indian Standards
Amendments are issued to standards as the need arises on the basis of comments. Standards are also
reviewed periodically; a standard along with amendments is reaffirmed when such review indicates that
no changes are needed; if the review indicates that changes are needed, it is taken up for revision.
Users of Indian Standards should ascertain that they are in possession of the latest amendments or
edition by referring to the latest issue of ’61S Catalogue’ and ‘Standards: Monthly Additions’. I
This Indian Standard has been developed from Dot: No. MGP/BP 33 (0406).
1
1--J:
Amendments Issued Since Publication::
Amend No. Date of Issue Text Affectedi’
BUREAU OF INDIAN STANDARDS
Headquarters:
Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi 110002Telephones 23230131,23233375,2323 9402 website: www.bis.org.in
Regional Offices: Telephones
Central :
Eastern :
Northern :
Southern :
Western :
Branches :
Manak Bhavan, 9 Bahadur Shah Zafar Marg{
23237617NEW DELHI 110002 23233841
1/14 C.I.T. Scheme Vll M, V.I.P. Road, Kankurgachi{
23378499,23378561KOLKATA 700054 23378626,23379120
SCO 335-336, Sector 34-A, CHANDIGARH 160022{
26038432609285
C.I.T. Campus, IV Cross Road, CHENNAI 600113{
22541216,2254144222542519,22542315
Manakalaya, E9 MlDC, Marol, Andheri (East){
28329295,28327858MUMBAI 400093 28327891,28327892
AHMEDABAD. BANGALORE. BHOPAL. BHUBANESHWAR. COIMBATORE. FARIDABAD.
GHAZIABAD. GUWAHATI. HYDERABAD. JAIPUR. KANPUR. LUCKNOW. NAGPUR.
NALAGARH. PATNA. PUNE. RAJKOT. THIRUVANANTHAPURAM. VISAKHAPATNAM.
Printedat Simco PrintingPress, Delhi
I
,- ““. -. —.