2001ISO 1173:2001 Assembly tools for screws and nuts - Drive ends for hand- and machine-operated screwdriver bits and connecting parts - Dimensions, torque testing
1988ISO 1173:1988 Assembly tools for bolts and screws; hexagon drive ends for hand- and machine-operated screwdriver bits
1975ISO 1173:1975 Assembly tools for bolts and screws — Hexagon drive ends for power tools