A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5998-00-108-6056
NSN 6105-01-095-6090
NSN 5905-01-594-5700
NSN 6145-01-479-5578
NSN 5996-00-193-3459
NSN 5960-01-042-5831
NSN 6145-01-238-4979
NSN 5985-01-103-2715
NSN 6135-01-205-5965
NSN 5905-00-420-2915
NSN 6220-01-066-1193
NSN 5999-01-032-8377