A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5895-01-392-2805
NSN 5950-01-633-9800
NSN 5998-01-514-0795
NSN 6135-01-282-4326
NSN 5905-01-432-0136
NSN 6220-01-081-5849
NSN 6610-00-222-4108
NSN 5985-00-891-3713
NSN 6610-01-590-4707
NSN 6685-01-650-8598
NSN 7035-01-223-4097
NSN 6610-01-261-1781