A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5915-00-965-6281
NSN 6685-01-597-9566
NSN 5960-01-224-7151
NSN 5895-00-525-3295
NSN 5895-00-671-1250
NSN 6320-01-319-3584
NSN 6145-00-144-0918
NSN 6130-01-427-9290
NSN 6610-01-383-6982
NSN 5935-00-062-0239
NSN 5905-00-463-8491
NSN 2925-01-556-0333