This International Standard specifies the overall length and the maximum head thickness for double-headed, flat (Form B) and offset (Form A), box wrenches complying with the test torque given by the formula M1 = 1,25 M, where M is the test torque, series C, of ISO 1711-1:1996.
NOTE Double-headed, flat and offset, box wrenches are listed in ISO 1703:1983 under numbers 8 (Form B) and 9 (Form A).
ISO 10103:2001 history
2018ISO 10103:2018 Assembly tools for screws and nuts - Doubled-headed box wrenches, flat and offset - Outside dimensions and test torques
2001ISO 10103:2001 Assembly tools for screws and nuts - Double-headed, flat and offset, box wrenches - Length of wrenches and thickness of the heads
1990ISO 10103:1990 Assembly tools for screws and nuts; double-headed, flat and offset, box wrenches