OS GSO ISO 68-2:2024
ISO 68-2:2023
Omani Standard
Current Edition
·
Approved on
14 October 2024
ISO general purpose screw threads — Basic and design profiles — Part 2: Inch screw threads
OS GSO ISO 68-2:2024 Files
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OS GSO ISO 68-2:2024 Scope
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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