ISO 7040 Prevailing torque hex nuts with non-metallic insert
CurrentLatest edition found. Still confirm amendments with the publisher.
- Edition
- ISO 7040:2025
- Publisher
- ISO
- Part family
- Fasteners & threads
- Reviewed
- 27 October 2026 · source checked
Is ISO 7040 still current?
Yes. ISO 7040:2025 is the latest edition MechAtlas found (MechAtlas review: 27 October 2026). Check the publisher for amendments before you specify it.
What it covers
Regular-height nylon insert lock nuts, coarse thread.
Parts that use ISO 7040
- Prevailing-torque lock nut (nyloc) (ISO / EN, main)
Hex nut with a nylon (non-metallic) insert that grips the thread to resist loosening by vibration.
Prevailing torque nut ISO 7040 - M12 - 8
Grades: Classes 5, 8, 10
Regular height, non-metallic insert, coarse thread.
Official source
MechAtlas does not reproduce standards. Check the official edition at the publisher's page for ISO 7040 or the ISO store.
Open in MechAtlasCheck a drawing callout
Other fasteners & threads standards
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Hardened parallel pins m6 (old) - DIN 6914 Replaced
HV hex bolts for steel structures (old) - DIN 7 Replaced
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Break mandrel blind rivets (old) - DIN 7991 Replaced
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Washers, outside diameter about 3 x thread - DIN 912 Replaced
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Hexagon socket set screws, cup point (ISO 4029 modified)