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BS ISO 2725-2:2017
Assembly tools for screws and nuts. Square drive sockets. Machine-operated sockets ("impact") (British Standard)
ISO 2725-2:2017 specifies dimensions, designation, and marking of machine-operated "impact" square drive sockets with operating end having a hexagonal or double hexagonal form in accordance with ISO 1174‑2.
NOTE Machine-operated "impact" square drive sockets covered by this document are the ones identified in ISO 1703 under reference numbers 2 2 02 01 0.
ISO 2725-2:2017 does not cover technical specifications for these products. Technical specifications are given in ISO 1711‑2.
British Standards Institution [bsi]