ISO 7720:2025
ISO 7720:2025 Fasteners — Prevailing torque hexagon nuts — High nuts (all metal) with slot(s)
CDN $82.00
This publication was last reviewed and confirmed in 2025.
Fasteners — Prevailing torque hexagon nuts — High nuts (all metal) with slot(s)
Description
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 to 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 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.
Edition
4
Published Date
2026-06-19
Status
PUBLISHED
Pages
6
Language
English
Format
Secure PDF
Secure – PDF details
- Save your file locally or view it via a web viewer
- Viewing permissions are restricted exclusively to the purchaser
- Device limits - 3
- Printing – Enabled only to print (1) copy
See more about our Environmental Commitment
Abstract
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 to 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 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.
Previous Editions
Can’t find what you are looking for?
Please contact us at:
Related Documents
-
ISO 8927:1991 Earth-moving machinery – Machine availability – Vocabulary
CDN $251.00 Add to cart -
ISO 8384:2019 Ships and marine technology – Dredgers – Vocabulary
CDN $82.00 Add to cart -
ISO 16840:2006 Wheelchair seating – Part 1: Vocabulary, reference axis convention and measures for body segments, posture and postural support surfaces
CDN $379.00 Add to cart -
ISO 10110:2019 Optics and photonics – Preparation of drawings for optical elements and systems – Part 1: General
CDN $336.00 Add to cart
