NA 121
DIN Standards Committee Tools and Clamping Devices
Standards
[CURRENT]
DIN ISO 691
DIN ISO 691
Assembly tools for screws and nuts - Wrench and socket openings - Tolerances for general use (ISO 691:2005)
Title (German)
Schraubwerkzeuge - Schlüsselweiten-Toleranzen für Schrauben- und Steckschlüssel (ISO 691:2005)