A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5998-01-547-0299
NSN 5855-01-432-8750
NSN 6320-01-386-3491
NSN 6685-00-024-5186
NSN 5945-00-294-4869
NSN 5999-01-285-2061
NSN 5975-00-766-8490
NSN 4140-01-457-5539
NSN 5950-01-316-9505
NSN 5990-01-555-6616
NSN 6135-00-112-8637
NSN 5950-00-003-5832