A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5985-01-192-1208
NSN 6610-01-286-8685
NSN 5999-00-777-0442
NSN 2925-01-467-7672
NSN 5998-01-363-2501
NSN 5920-01-147-4903
NSN 5950-01-539-3240
NSN 6135-01-514-0356
NSN 6145-01-169-1683
NSN 6320-01-111-0960
NSN 6105-01-447-5129
NSN 6620-00-164-1493