The document applies to hand operated non-adjustable wrenches and sockets (except for striking-face wrenches), where the wrench opening seizes the screw head or the nut all over or at least on two opposite sides.#,,#
DIN 899:2001 history
2007DIN ISO 1711-1:2007 Assembly tools for screws and nuts - Technical specifications - Part 1: Hand-operated wrenches and sockets (ISO 1711-1:2007) English version of DIN ISO 1711-1-2007-05
2001DIN 899:2001 Hand operated wrenches and sockets - Technical specifications