NF ISO 1711-1
Assembly tools for screws and nuts. Technical specifications. Part 1 : hand-operated wrenches and sockets.
La présente norme s'applique aux clés et douilles des types suivants, repérés d'après leur numéro d'ordre dans la norme NF E 74-380 Outils de serrage des vis et écrous - Nomenclature : - Clés à fourche N°s 1 et 4; - Clés polygonales . N°s 5, 6, 8, 9, 10 et 11 ; - Clés mixtes N°s 13 et 14; - Clés à douilles et clés dérivées N°s 15, 17, 19, 20 et 21 ; - Douilles à main à carré conducteur N° 24. Elle spécifie les valeurs minimales de dureté de ces outils et les conditions de résistance auxquelles ils doivent satisfaire.
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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