Historical
ISO 10104:2001
Assembly tools for screws and nuts -- Double-headed, deep offset and modified offset, box wrenches -- Length of wrenches and thickness of the heads
This International Standard specifies the overall length and the maximum head thickness for double-headed, deep offset (Form B) and modified offset (Form A), box wrenches complying with the test torque, series A, of ISO 1711-1:1996.
International Organization for Standardization [iso]