A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5999-00-115-5843
NSN 5965-01-399-8454
NSN 6685-01-459-1979
NSN 5996-01-555-2924
NSN 5935-01-535-0788
NSN 6220-01-122-3155
NSN 5895-00-644-5712
NSN 6150-00-221-5122
NSN 6150-01-563-1758
NSN 6130-00-151-5001
NSN 5975-00-162-2083
NSN 6240-00-361-1421