ISO International Standard

ISO 3318:2016 specifies the maximum outside head dimensions for open-ended wrenches, box wrenches and combination wrenches.

NOTE 1 The wrenches covered by this document are the ones identified in ISO 1703:2005 under reference nos. 1 1 01 02 0, 1 1 01 05 0, 1 1 01 06 0, 1 1 02 03 0, 1 1 02 04 0, 1 1 02 05 0, 1 1 02 06 0, 1 1 02 01 0, 1 1 02 02 0 and 1 1 02 08 0.

NOTE 2 Box wrenches can also be designated as ring wrenches.

ISO 3318:2016 does not cover technical specifications for these products. Technical specifications are given in ISO 1711‑1.