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ISO 68-2:2023

ISO general purpose screw threads — Basic and design profiles — Part 2: Inch screw threads

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Kehtiv alates 05.10.2023
Tegevusala (ICS grupid)
21.040.20 Tollkeermed
Direktiivid või määrused
puuduvad

Standardi ajalugu

Staatus
Kuupäev
Tüüp
Nimetus
05.10.2023
Põhitekst
31.01.2020
Muudatus
20.12.1998
Põhitekst
This document specifies the basic and design profiles for ISO inch screw threads (UN and UNR).
UN applies to both internal and external threads. UNR only applies to external threads. A flat or rounded root contour, due to the threading process, is specified for UN threads, while only a defined rounded root contour is specified for UNR external threads.
This document is applicable to the inch fastening screw threads.

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