This International Standard applies to attachments for hand-operated square drive socket wrenches listed in NOTE 1 The above-mentioned designations correspond to the former designation numbers 203, 204 and 205.
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) designation, and f) marking.
NOTE 2 For the specification of square adaptors with a hexagon or cylindrical flat drive, for power socket wrenches,
ISO 3316:2012 history
2018ISO 3316:2018 Assembly tools for screws and nuts — Attachments for hand-operated square drive socket wrenches — Dimensions and tests
2012ISO 3316:2012 Assembly tools for screws and nuts - Attachments for hand-operated square drive socket wrenches - Dimensions and tests
1996ISO 3316:1996 Assembly tools for screws and nuts - Attachments for hand-operated square drive socket wrenches - Dimensions and tests
1988ISO 3316:1988 Assembly tools for screws and nuts — Attachments for hand-operated square drive socket wrenches — Torque testing
1975ISO 3316:1975 Assembly tools for screws and nuts — Attachments for hand-operated square drive socket wrenches — Torque testing