A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5930-00-973-5769
NSN 6150-01-598-6120
NSN 5945-01-142-3321
NSN 5990-00-446-0518
NSN 5835-00-283-3616
NSN 5998-00-165-3862
NSN 5895-01-252-8622
NSN 5999-01-534-9682
NSN 5998-01-430-4676
NSN 6685-01-659-2621
NSN 6135-00-315-1187
NSN 5990-01-362-7532