BS ISO 3315:2018 pdf download.Assembly tools for screws and nuts — Driving parts for hand-operated square drive socket wrenches — Dimensions and tests
1 Scope
This document is applicable to driving parts of hand-operated square drive socket wrenches.
NOTE The driving parts covered by this document are the ones identified in ISO 1703:2018 under reference No. 6 1 00 01 0 and 6 1 00 01 1, 6 1 00 03 0, 6 1 00 04 0, 6 1 00 05 0 and 6 1 00 05 1, 6 1 00 06 0 and 6 1 00 06 1,6 1 00 09 0 as well as 6 1 00 10 0 and 6 1 00 10 1.
It specifies:
a) the overall dimensions;
b) the minimum Rockwell hardness value for their driving squares;
c) the method of torque testing;
d) the minimum torsional strength values;
e) the designation;
f) the marking.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1174-1, Assembly tools for screws and nuts — Driving squares — Part 1: Driving squares for hand socket tools
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://w w w.electropedia.org/
4 Dimensions
The overall dimensions are given in Table 1.
5 Driving squares
Driving squares shall be in accordance with ISO 1174-1 and shall have a minimum hardness of 39 HRC.
6 Torque testing
6.1 Method Place the tool in an internal 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 torque (see Table 1) is reached. The across-flats dimension of the internal test square shall be equal to the minimum dimension of the corresponding internal square (see ISO 1174-1) with a tolerance of H8; the internal test square shall be hardened to not less than 55 HRC. A device in which the internal test square can be rotated at a certain torque, determined to an accuracy of ±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 the usability of the tool.
6.2 Special requirements
6.2.1 Test of T-handle, square drive
Draw out the handle completely at one end and apply the load to the end furthest from the test square.
6.2.2 Test of speeder, brace type
Apply the load in the middle of the part on which the operator’s hand normally rests.
6.2.3 Test of ratchet handle and ratchet handle, reversible
Apply the load as close as possible to the end of the handle.
For tools having a reversible ratchet, the test shall be carried out in both directions.
BS ISO 3315:2018 pdf download
