UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

close
Already an Engineering360 user? Log in.

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

Customize Your Engineering360 Experience

close
Privacy Policy

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

ASME B1.1

Unified Inch Screw Threads (UN and UNR Thread Form)

active, Most Current
Buy Now
Organization: ASME
Publication Date: 1 January 2019
Status: active
Page Count: 194
scope:

This Standard specifies the thread form, series, class, allowance, tolerance, and designation for unified screw threads. (In order to emphasize that unified screw threads are based on inch modules, they may be denoted unified inch screw threads.) Several variations in thread form have been developed for unified threads; however, this Standard covers only UN, UNR, and UNJ thread forms.

The metric translation of this Standard that was in the 2003 edition has been removed (see Nonmandatory Appendix C). Nonmandatory Appendices D through F contain information that is supplementary to the sections of this Standard.

Document History

ASME B1.1
January 1, 2019
Unified Inch Screw Threads (UN and UNR Thread Form)
This Standard specifies the thread form, series, class, allowance, tolerance, and designation for unified screw threads. (In order to emphasize that unified screw threads are based on inch modules,...
January 1, 2003
Unified Inch Screw Threads (UN and UNR Thread Form)
This Standard specifies the thread form, series, class, allowance, tolerance, and designation for unified screw threads. (In order to emphasize that unified screw threads are based on inch modules,...
January 1, 1989
Unified Inch Screw Threads (UN and UNR Thread Form)
This Standard specifies the thread form, series, class, allowance, tolerance, and designation for unified screw threads. (In order to emphasize that unified screw threads are based on inch modules,...
June 15, 1984
ADDENDA TO B1.1 - 1982 UNIFIED INCH SCREW THREADS (UN AND UNR THREADS FORM)
A description is not available for this item.
December 15, 1982
UNIFIED INCH SCREW THREADS (UN AND UNR THREAD FORM); ERRATA,
This Standard specifies the thread form, series, class, allowance, tolerance, and designation for uni- fied screw threads. (In order to emphasize that unified screw threads are based on inch modules,...
January 1, 1974
Unified Inch Screw Threads
This standard, ANSI B 1.1, specifies the thread form, series, classes, allowance, tolerance and designations for Unified Screw Threads. (In order to emphasize that Unified Screw Threads are based on...
January 1, 1960
Unified Screw Threads
A description is not available for this item.
January 1, 1949
Unified Inch Screw Threads (UN and UNR Thread Form)For Screws, Bolts, Nuts, and Other Threaded Parts
There is no end to the development and improvement of an active standard. This revised edition of B1.1 marks an important step forward in that it embodies the Unified Thread standards which have been...
January 1, 1935
Screw Threads For Bolts, Nuts, Machine Screws, and Threaded Parts
General This standard covers the dimensional specifications for American Standard Screw Threads applicable to bolts, machine screws, nuts, tapped holes, and other threaded parts. It is a revision of...

References

Advertisement