ISO 2320 Prevailing torque steel nuts - functional properties
CurrentLatest edition found. Still confirm amendments with the publisher.
- Edition
- ISO 2320:2015
- Publisher
- ISO
- Part family
- Fasteners & threads
- Reviewed
- 27 October 2026 · source checked
Is ISO 2320 still current?
Yes. ISO 2320:2015 is the latest edition MechAtlas found (MechAtlas review: 27 October 2026). Check the publisher for amendments before you specify it.
What it covers
Test and performance requirements for lock nuts.
Parts that use ISO 2320
- Prevailing-torque lock nut (nyloc) (ISO / EN, grade)
Hex nut with a nylon (non-metallic) insert that grips the thread to resist loosening by vibration.
Functional and prevailing torque requirements.
Official source
MechAtlas does not reproduce standards. Check the official edition at the publisher's page for ISO 2320 or the ISO store.
Open in MechAtlasCheck a drawing callout
Other fasteners & threads standards
- DIN 125-1 Replaced
Washers, product grade A, up to 250 HV - DIN 1481 Replaced
Heavy spring pins (old) - DIN 2999-1 Replaced
Whitworth pipe threads (old) - DIN 6325 Replaced
Hardened parallel pins m6 (old) - DIN 6914 Replaced
HV hex bolts for steel structures (old) - DIN 7 Replaced
Parallel pins (old) - DIN 7337 Replaced
Break mandrel blind rivets (old) - DIN 7991 Replaced
Hexagon socket countersunk head screws - DIN 9021 Replaced
Washers, outside diameter about 3 x thread - DIN 912 Replaced
Hexagon socket head cap screws (ISO 4762 modified) - DIN 913 Replaced
Hexagon socket set screws, flat point (ISO 4026 modified) - DIN 916 Replaced
Hexagon socket set screws, cup point (ISO 4029 modified)