ISO 7719:2025Published

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

Fixations — Écrous hexagonaux autofreinés — Écrous normaux (tout métal)

Abstract / scope

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.

Life cycle

Replaces

ISO 7719:2012WithdrawnPrevailing torque type all-metal hexagon regular nuts — Property classes 5, 8 and 10International Standard · Published 14 Dec 2012 · ISO/TC 2/SC 12 ISO 7719:2012/Cor 1:2013WithdrawnPrevailing torque type all-metal hexagon regular nuts — Property classes 5, 8 and 10 — Technical Corrigendum 1International Standard · Published 25 Mar 2013 · ISO/TC 2/SC 12