A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6110-01-023-2248
NSN 5998-00-305-0429
NSN 5990-00-444-9993
NSN 6240-01-166-4517
NSN 5985-01-472-8399
NSN 5975-00-126-5724
NSN 6240-00-682-8315
NSN 6685-01-168-8194
NSN 6645-00-479-9334
NSN 2925-01-629-9416
NSN 7035-00-417-2967
NSN 7035-01-633-9537