ISO general purpose screw threads - Basic profile - Part 2 : inch screw threads

This part of ISO 68 specifies the basic profile for ISO inch screw threads.

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Main informations

Collections

National standards and national normative documents

Publication date

October 2004

Number of pages

8 p.

Reference

NF ISO 68-2

ICS Codes

21.040.20 Inch screw threads

Classification index

E03-006

Print number

1 - 23/09/2004

International kinship

ISO 68-2:1998

Sumary

ISO general purpose screw threads - Basic profile - Part 2 : inch screw threads

This part of ISO 68 specifies the basic profile for ISO inch screw threads.

Standard replaced by (1)

NF ISO 68-2

October 2023

Standard Current

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

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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