BSI BS EN ISO 7041:2025

Current Revision
Prevailing torque type hexagon nuts (with non-metallic insert), style 2. Property classes 9 and 12

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BSI BS EN ISO 7041:2025

Prevailing torque type hexagon nuts (with non-metallic insert), style 2. Property classes 9 and 12

PUBLISH DATE 2025
PAGES 14
BSI BS EN ISO 7041:2025

This document specifies the characteristics of prevailing torque hexagon high nuts (with non-metallic insert), 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 equal to mmin (as specified in ISO 898-2 and ISO 4033 for style 2) plus the prevailing torque feature.

The height of the prevailing torque feature (hmax – mmin) for the non-metallic insert is identical for regular, high and thin nuts for a given diameter.

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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