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1、INTERNATIONAL STANDARD IS0 3315 Third edition 1996-l 2-01 Assembly tools for screws and nuts - Driving parts for hand-operated square drive socket wrenches - Dimensions and tests Outils de mancwvre pour vis et 6crous - Pi b) the minimum Rockwell hardness value for their squares; c) the method of tor
2、que testing; d) the minimum torsional strength values; e) the method endurance of testing for ratchet handles; f) designation; g) marking. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At
3、 the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and I
4、S0 maintain registers of currently valid International Standards. IS0 1174-l :I 996, Assembly tools for screws and nuts - Driving squares - Part 1: Driving squares for hand socket tools. IS0 171 l-l :1996, Assembly tools for screws and nuts - Technical specifications - Part 1: /-/and-operated wrench
5、es and sockets. 3 Dimensions The overall dimensions are given in table 1. 1 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 01:28:11 MDTNo reproduction or networking permitted wi
6、thout license from IHS -,-,- IS0 3315:1996(E) Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 01:28:11 MDTNo reproduction or networking permitted without license from IHS -,-,- I
7、S0 3315:1996(E) Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 01:28:11 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 3315:1996(E) 4 Driving squa
8、res Driving squares shall be in accordance with IS0 1174-1, and have a minimum hardness of 39 HRC 5 Torque testing 5.1 Method Place the tool in a female test square and apply the corresponding torque. Do not jerk or strike the tool when testing and apply the load gradually until the minimum testing
9、torque (see table I) is reached. The across-flats dimension of the female test square shall be equal to the minimum dimension of the corresponding female square (see IS0 1174-l) with a tolerance of H8; the female test square shall be hardened to not less than hardness 55 HRC. A device in which the f
10、emale test square can be rotated at a certain torque, determined with an accuracy of f 2,5 %, may also be used for this test. Following the application of the minimum test torsion torque, any possible damage or deformation shall not affect usability of the tool. 5.2 Special requirements 5.2.1 Test o
11、f tee handle square drive Draw out the handle completely at one end and apply the load to the end farthest from the test square. 5.2.2 Test of speed brace Apply the load in the middle of the part on which the operators hand normally rests. 5.2.3 Test of ratchet handle and reversible ratchet handle A
12、pply the load as near as possible to the end of the handle. For tools having a reversible ratchet, type 257, the test shall be carried out in both directions. 5.2.4 Test of male square spin type handle An appropriate appliance shall allow the load to be applied to the handle without clamping the han
13、dle on the rod, which could alter the test result. 5.2.5 Test of flex head nut spinner Apply the load as near as possible to the end of the handle, which is placed at right angles to the axis of the square. 5.2.6 Test of offset handle square drive Apply the load as near as possible to the end of the
14、 handle. 4 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 01:28:11 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 IS0 3315:1996(E) 6 Endurance tes
15、t for ratchet handles After the torque testing specified in 5, an endurance test shall be carried out for ratchet handles and reversible ratchet handles (listed under numbers 256 and 257). The test conditions are given in table 2. Table 2 - Values for endurance test Driving Number Cycle test Frequen
16、cy square of cycles torque max. mm N.m cycles per minute 63 50 000 15 30 10 50 000 50 30 12,5 50 000 128 30 The test shall be carried out for one direction of rotation, by smoothly applying the specified torque. During the test, all the teeth shall be involved. No intervention of maintenance is allo
17、wed during the test. After the test, the tool shall not show any physical damage and shall still withstand the torque testing specified in 5.2.3. 7 Designation A driving part for hand-operated square drive socket wrenches in accordance with this International Standard shall be designated by a) abbre
18、viated description as shown in table 1 followed by its identity number; b) reference to this International Standard; c) dimension of the square drive, in millimetres. EXAMPLE Ratchet handle (No. 256) with nominal dimension of the square drive 12,5 mm: Ratchet Handle No. 256 IS0 3315 - 12,5 8 Marking
19、 Driving parts for hand-operated square drive socket wrenches shall be marked, permanently and legibly, with at least the following information: - the name or trademark of the manufacturer (or distributor). Copyright International Organization for Standardization Provided by IHS under license with I
20、SO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 01:28:11 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 3315:1996(E) Annex A (informative) Bibliography I 1 IS0 1703:1983, Assembly tools for screws and nuts - Nomendature. 0 IS0 6 Copyright I
21、nternational Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 01:28:11 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 3315:1996(E) ICS 25.140.30 Descriptors: tools, assembl
22、y tools, hand tools, socket wrenches, dnvlng squares, specifications, dlmenslons, tests, torsion tests, fatigue tests, determination, mechanical strength, designation, marking. Price based on 6 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/25/2007 01:28:11 MDTNo reproduction or networking permitted without license from IHS -,-,-