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है”ह”ह

IS 12982 (1991): Pins and grooved pins - Shear test [PGD31: Bolts, Nuts and Fasteners Accessories]

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IS 12982 : 1991 IS0 0749 : 1986

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Indian Standard

PINS AND GROOVED PINS-SHEAR TEST

UDC 621’886’1 : 620’176

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January 1991

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BUREAU OF INDIAN STkMDARDS s”/ ;

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MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG I

NEW DELHI 110002 j

Price Group 2 ,‘- ;$ -’ ; ,,I% .

IS 12982 : 1991 IS0 8749 : 1986

Indian Standard

PINS AND GROOVED PINS-SHEAR TEST

NATIONAL FOREWORD

This Indian Standard which is identical with IS0 8749 : 1986 ‘Pins and grooved pins - Shear test’ issued by the International Organization for Standardization ( ISO) was adopted by the Bureau of Indian Standards on recommendation of the Bolts, Nuts and Fasteners Accessories Sectional Committee and approval of the Light Mechanical Engineering Division Council.

This standard has been prepared to support the latest versions of product standards on grooved pins wherein shear strength values have been incorporated.

Following series of standards have been published on grooved pins:

IS 7368 : 1990 Grooved pins - Full-length taper grooved - Specification ( first revision )

IS 7383 : 1990 Grooved pins - Third-length contre grooved - Specification ( first revision )

IS 7384 : 1990 Grooved pins - Full-length parallel grooved with pilot - Specification ( first revision )

IS 7385 : 1990 Grooved pins - Half-length taper grooved - Specification ( first revision )

IS 7386 : 1990 Grooved pins - Half-length reverse taper grooved - Specification ( first revision )

IS 12952 : 1990 Grooved pins - Full-length parallel grooved with chamfer - Specification

In the adopted standard, certain conventions which are not identical to those used in Indian Standards have been used; attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’.

b) Comma (, ) has been used as a decimal marker while in Indian Standards, the current practice is to use point ( . ) as the decimal marker.

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As in the Original Standard, this Page is Intentionally Left Blank

IS 12982 : 1991 ISO, 8749 : 1986

1 Scope and field of application

This international Standard specifies the test method for shear testing of metallic pins with nominal diameters from 0.8 to 25 mm inclusive.

2 Principle

The test consists of subjecting a pin to a double shear load using a suitable test fixture in a testing machine and recording the maximum load to fracture.

3 Test equipment and method

The shear test is performed in a fixture ( a typical fixture is shown in the figure ) in which the pin support members and the member for applying the load holes with diameters conforming to the nominal pin size ( tolerance H6 ) and a hardness of not less than 700 HV.

Load r Shsarb’ock

L- Spacer

The clearance between the supporting member and the load member shall not exceed 0,15 mm. The shear planes shall be at least one pin diameter away from each end and at least two diameters apart. Pins too short to be tested by double shear shall be tested by shearing two pins simultaneous- ly in a single shear.

Spring pins shall be mounted in the test fixture with the slot upwards.

Pins shall be tested to fracture. The maximum load applied to the pin coincident with or prior to pin fracture shall be regarded as the double shear strength of the pin.

Pins tested for shear strength shall show a ductile shear without longitudinal cracks.

The speed of testing shall not exceed 13 mm/min.

Pin

Hardened shear _ block

Hardened support block

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i Spacers and guides for shear block

Figure - Typical pin shear test fixture

3

BIS is akatutory ins?&iti established under the Bureau of indian Stundurds Act, harn@‘iious develop+ &f the activities of standardization,

1986 to promote marking and quality certification of goods

, md 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 ( Publications ). BIS.

Revision, of Indian Standards

Indian Standards are reviewed periodically and revised, when necessary and amendments, if any, are issued from time to time. Users of Indian Standards should ascertain that they are in possession of the latest amendments or edition. Comments on this Indian Standard may be sent to BIS giving the following’ reference:

Dot : No. LMD 14 (0023 )

Amendments Issued Since Publication

Amend No. Date of Issue Text Affected

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