A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5945-01-461-6711
NSN 6105-01-031-3874
NSN 2925-01-501-1104
NSN 6105-01-184-7431
NSN 5990-00-373-9787
NSN 6240-01-045-9269
NSN 6220-00-976-1473
NSN 5920-01-274-3249
NSN 5935-01-411-1059
NSN 5935-01-311-0587
NSN 2925-01-157-9204
NSN 5999-01-332-1554