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ČSN EN ISO 7720 (021480)
Fasteners - Prevailing torque hexagon nuts - High nuts (all metal) with slot(s)
Translate name
STANDARD published on 1.12.2025
The information about the standard:
Designation standards: ČSN EN ISO 7720
Classification mark: 021480
Catalog number: 522357
Publication date standards: 1.12.2025
SKU: NS-1249099
The number of pages: 20
Approximate weight : 60 g (0.13 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
The category - similar standards:
Annotation of standard text ČSN EN ISO 7720 (021480):
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
Preview of the standard ČSN EN ISO 7720 (021480)
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