A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5935-00-760-1343
NSN 5930-00-558-9157
NSN 5965-00-754-9059
NSN 6220-01-401-5337
NSN 5920-01-009-1307
NSN 5975-01-610-1380
NSN 6105-01-227-3003
NSN 5835-00-443-1079
NSN 2925-00-225-5386
NSN 6130-01-655-6755
NSN 6150-01-274-0814
NSN 6685-01-487-2884