NASM-21224 Complete Document History
Nut, Self-Locking, Castellated, Hexagon, Counterbored, Assembled Washer, 250 Degrees F

Complete Current Edition:
   REVISION 3 - Counterbored, Assembled Washer, 250 Degrees F - Nov. 29, 2019

Obsolete Revision Information:
   REVISION 2 - Nut, Self-Locking, Castellated, Hexagon, Counterbored, Assembled Washer, 250 Degrees F - Sept. 19, 2014
   REVISION 1 - NON-METALLIC INSERT (FOR SELF-RETAINING BOLTS) - Dec. 23, 2010
   DOD ADOPTION - FYI ONLY: DOD ADOPTED - Nov. 4, 1999
   1999 EDITION - METALLIC INSERT (FOR SELF-RET - Sept. 1, 1999