:
1) Revision of ANSI B1.2:1974.
References to conformance criteria were removed from ANSI B1.2-1974 and additional gages and gaging
data were added to suit additional conformance requirements specified in ANSI B1.3 or
other B1 thread documents.
This new publication, designated ANSI/ASME B1.2-1983, has had considerable new
material added to cover the many options of gages and measuring equipment shown in
ANSI B1.3. It has also reapplied HI and LO to function as NOT GO gages and has eliminated gages with pitch diameter
outside product thread limits. ANSI B1.2 was approved by the ASME Standards Committee B1 on March 18, 1983.
2) Reaffirmed year: 2001, 2007. Errata, May 1992.