NA 121
DIN Standards Committee Tools and Clamping Devices
Standards
[Withdrawn]
ISO 691
ISO 691
Wrench and socket openings; Metric series; Tolerances for general use
Title (German)
Schlüsselweitentoleranzen für Schraubenschlüssel; metrische Reihe
Responsible national committee
NA 121-05-01 AA - Assembly tools for screws and nuts, Fastening tools
Responsible international committee
ISO/TC 29/SC 10 - Assembly tools for screws and nuts, pliers and nippers