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STANDARD

Current

ÖNORM EN ISO 7040

Issue date: 2025 09 15

Fasteners - Prevailing torque hexagon nuts - Regular nuts (with non-metallic insert) (ISO 7040:2025)

This document specifies the characteristics of prevailing torque hexagon regular nuts (with non‑metallic insert), in steel and stainless steel, with metric coarse pitch thread M3 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 4032 for style 1) 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. Nuts with sizes D < M5 and design principles in accordance with style 1 are specified in Annex A. 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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General information on ÖNORM EN ISO 7040

Format

Digital | 16 Pages

Language

German | English | Download GER/ENG

Publisher

Austrian Standards International

Committee 029 Mechanical fasteners

Timeline

An overview of the development of ÖNORM EN ISO 7040 from 1998 til today.

• ÖNORM EN ISO 7040

  2025 09 15 Standard ÖNORM EN ISO 7040, Edition: 2025 09 15

  Fasteners - Prevailing torque hexagon nuts - Regular nuts (with non-metallic insert) (ISO 7040:2025)...
• ÖNORM EN ISO 7040

  2013 04 15 Standard ÖNORM EN ISO 7040, Edition: 2013 04 15

  Prevailing torque type hexagon regular nuts (with non-metallic insert) - Property classes 5, 8 and 1...
• ÖNORM EN ISO 7040

  1998 04 01 Standard ÖNORM EN ISO 7040, Edition: 1998 04 01

  Prevailing torque type hexagon nuts (with non-metallic insert), style 1 - Property classes 5, 8 and ...

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Normative References

Here you will find an extract of the normative references. Please refer to the document itself for the full list.

Dokumentnummer	Titel	Ausgabedatum	Art	Link
Dokumentnummer ISO 10683:2018	Titel Fasteners — Non-electrolytically applied zinc flake coating systems	Ausgabedatum 2018 08 13	Art Standard	Zur Produktseite
Dokumentnummer ISO 1891-4:2018	Titel Fasteners — Vocabulary — Part 4: Control, inspection, delivery, acceptance and quality	Ausgabedatum 2018 05 23	Art Standard	Zur Produktseite
Dokumentnummer ISO 225:2010	Titel Fasteners — Bolts, screws, studs and nuts — Symbols and descriptions of dimensions	Ausgabedatum 2010 09 24	Art Standard	Zur Produktseite
Dokumentnummer ISO 2320:2015	Titel Fasteners — Prevailing torque steel nuts — Functional properties	Ausgabedatum 2015 11 30	Art Standard	Zur Produktseite
Dokumentnummer ISO 3269:2019	Titel Fasteners — Acceptance inspection	Ausgabedatum 2019 07 25	Art Standard	Zur Produktseite
Dokumentnummer ISO 3506-2:2020	Titel Fasteners — Mechanical properties of corrosion-resistant stainless steel fasteners — Part 2: Nuts with specified grades and property classes	Ausgabedatum 2020 04 06	Art Standard	Zur Produktseite
Dokumentnummer ISO 4042:2018	Titel Fasteners — Electroplated coating systems	Ausgabedatum 2018 08 13	Art Standard	Zur Produktseite
Dokumentnummer ISO 4759-1:2000	Titel Tolerances for fasteners — Part 1: Bolts, screws, studs and nuts — Product grades A, B and C	Ausgabedatum 2000 11 09	Art Standard	Zur Produktseite
Dokumentnummer ISO 6157-2:1995	Titel Fasteners — Surface discontinuities — Part 2: Nuts	Ausgabedatum 1995 07 20	Art Standard	Zur Produktseite
Dokumentnummer ISO 898-2:2012	Titel Mechanical properties of fasteners made of carbon steel and alloy steel — Part 2: Nuts with specified property classes — Coarse thread and fine pitch thread	Ausgabedatum 2012 03 16	Art Standard	Zur Produktseite
Dokumentnummer ISO 8991:1986	Titel Designation system for fasteners	Ausgabedatum 1986 11 27	Art Standard	Zur Produktseite
Dokumentnummer ISO 8992:2005	Titel Fasteners — General requirements for bolts, screws, studs and nuts	Ausgabedatum 2005 04 15	Art Standard	Zur Produktseite
Dokumentnummer ISO 965-1:2013	Titel ISO general purpose metric screw threads — Tolerances — Part 1: Principles and basic data	Ausgabedatum 2013 09 13	Art Standard	Zur Produktseite

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