NF EN ISO 7719

Fasteners - Prevailing torque hexagon nuts - Regular nuts (all metal)

This document specifies the characteristics of prevailing torque (all metal) hexagon regular nuts, in steel and stainless steel, with metric coarse pitch thread M5 to M39, and with product grades A and B.

NOTE            These nuts are designed with an overall height h_min = m_min (as specified in ISO 898-2 and ISO 4032 for style 1) plus the prevailing torque feature. h_max has been established in function of h_min; therefore, the tolerance (h_max ? h_min) does not follow the ISO code system for tolerances (IT system).

If in certain cases other specifications are requested, property classes and stainless steel grades can be selected from ISO 898-2 or ISO 3506-2.

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