Gray epoxy finish on head and sides of washer assembly
A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6645-01-495-0939
NSN 5950-01-310-6113
NSN 6650-00-991-8434
NSN 6320-00-977-3930
NSN 6220-00-602-2854
NSN 5925-00-197-4329
NSN 5965-01-587-5641
NSN 5855-01-333-9606
NSN 5915-01-256-5915
NSN 5945-01-089-7805
NSN 5985-01-337-6475
NSN 5960-01-054-9639