FED-STD-H28/2 Complete Document History
Screw-Thread Standards for Federal Services Section 2 Unified Inch Screw Threads-Un &

Complete Current Edition:
   REVISION B - SCREW-THREAD STANDARDS FOR FEDERAL SERVICES SECTION 2 UNIFIE - Aug. 20, 1991
   REV B VALIDATION 1 - VALIDATION NOTICE 1, REV B - Sept. 27, 2001
   REV B VALIDATION 2 - VALIDATION NOTICE 2, REV B - Nov. 28, 2006
   REV B VALIDATION 3 - VALIDATION NOTICE 3 FOR REVISION B - Feb. 27, 2019

Obsolete Revision Information:
   REV A VALIDATION 1 - VALIDATION NOTICE 1, REV A - April 3, 1989
   REVISION A - SCREW-THREAD STANDARDS FOR FEDERAL SERVICES SECTION 2 UNIFIE - April 20, 1984
   BASE - SCREW-THREAD STANDARDS FOR FEDERAL SERVICES SECTION 2 UNIFIE - March 31, 1978