UNE-EN ISO 7720:2026
Current
The latest, up-to-date edition.
Fasteners - Prevailing torque hexagon nuts - High nuts (all metal) with slot(s) (ISO 7720:2025)
Hardcopy , PDF
English, Spanish, Castilian
04-03-2026
This document specifies the characteristics of prevailing torque (all metal) hexagon high nuts with slot(s), 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 mmin as specified ISO 4032 and with an overall height h greater than in
ISO 7042, in order accommodate the prevailing torque feature with slot(s); this height h contributes to the nut
resistance due to the number of engaged threads. hmin values have been calculated as a function of hmax together with
a ratio hmax/D that progresses regularly with increasing diameter, therefore the tolerance (hmax hmin) does not follow
the 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.
| Committee |
CTN 17
|
| DocumentType |
Standard
|
| Pages |
15
|
| PublisherName |
Asociación Española de Normalización
|
| Status |
Current
|
| Standards | Relationship |
| EN ISO 7720:2025 | Identical |
| ISO 7720:2025 | Identical |
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