A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6220-00-752-6030
NSN 5998-01-215-9354
NSN 6685-01-407-3282
NSN 2925-01-456-6840
NSN 5855-01-169-9228
NSN 6685-00-549-6438
NSN 6645-01-446-5419
NSN 4140-01-458-9626
NSN 6220-01-036-7365
NSN 5930-01-530-9041
NSN 2925-01-327-3069
NSN 5855-01-389-8884