NASM-51958 Complete Document History
Screw, Machine Pan-head, Cross-recessed, Corrosion Resisting Steel, UNF-2A

Complete Current Edition:
   3RD EDITION - SCREW, MACHINE, PAN HEAD, CRUCIFORM RECESS, CORROSION RESISTING STEEL, UNF-2A - July 31, 2019

Obsolete Revision Information:
   2ND EDITION - Screw, Machine Pan-head, Cross-recessed, Corrosion Resisting Steel, UNF-2A - March 31, 2014
   REVISION 1 - Screw, Machine Pan-head, Cross-recessed, Corrosion Resisting - April 27, 2010
   DOD ADOPTION - FYI ONLY: DOD ADOPTED - Sept. 30, 1999
   BASE - Screw, Machine Pan-head, Cross-recessed, Corrosion Resisting - Sept. 1, 1999