A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6110-00-427-9239
NSN 5935-00-726-2419
NSN 4140-01-514-9581
NSN 5855-00-482-9876
NSN 4140-01-377-5413
NSN 5905-00-267-9527
NSN 5855-00-055-1579
NSN 6240-01-455-1749
NSN 6110-00-932-5257
NSN 6130-01-197-7009
NSN 6685-01-397-8694
NSN 6130-01-467-7010