Standard NBN ISO 10104:2021
Assembly tools for screws and nuts — Double-headed box wrenches, deep offset and modified offset — Outside dimensions (ISO 10104:2018)
25.140.30 Hand-operated tools
This document specifies the overall length and the maximum head thickness for double-headed box wrenches, deep offset (Form B) and modified offset (Form A). NOTE The wrenches covered by this document are the ones identified in ISO 1703:2005 under reference numbers 1 1 02 06 0 and 1 1 02 05 0. This document does not cover technical specifications for these products. Technical specifications are given in ISO 1711-1:2016, series A.