Environmental testing - Part 2: Tests; test U: Robustness of terminations and integral mounting devices (IEC 60068-2-21:1983 + A1:1985 + A2:1991 + A3:1992); German version EN 60068-2-21:1997 + A2:1997 + A3:1997— 18 стр.
Assembly tools for screws and nuts - Screwdrivers for slotted-head screws - Part 2: General requirements, lengths of blades and marking of hand-operated screwdrivers (ISO 2380-2:2004)— 5 стр.