NF ISO 1711-1

Assembly tools for screw and nuts - Technical specifications - Part 1 : hand-operated wrenches and sockets

ISO 1711-1:2007 specifies minimum values for Rockwell hardness and torsional strength for hand-operated wrenches and sockets.

It covers three series of torsion torques:

• Series A: usual box wrenches and socket wrenches;
• Series C: open end wrenches;
• Series E: hand-operated square drive sockets.

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