A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5920-00-584-4592
NSN 5920-01-454-1360
NSN 6610-01-406-6696
NSN 5835-00-244-4956
NSN 5975-01-424-6359
NSN 5835-01-391-4556
NSN 6150-01-072-5227
NSN 6610-00-809-5572
NSN 5905-00-516-0814
NSN 5985-00-360-6529
NSN 4140-00-283-6843
NSN 6685-00-404-3715