A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5975-01-184-2736
NSN 5915-01-445-6577
NSN 5985-00-721-4303
NSN 5945-01-142-6853
NSN 5930-01-065-7744
NSN 4140-01-325-5422
NSN 6110-01-463-3155
NSN 6650-01-452-8302
NSN 6220-00-858-2456
NSN 5985-01-115-6857
NSN 6145-00-398-4405
NSN 5999-01-295-9408