A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5985-01-188-4499
NSN 5985-01-535-0459
NSN 6130-00-826-5590
NSN 6105-01-304-8172
NSN 4140-00-067-2590
NSN 5915-01-611-5031
NSN 5915-00-752-4458
NSN 5920-01-485-3280
NSN 6220-01-382-7997
NSN 2925-01-089-6269
NSN 5999-00-216-7431
NSN 6135-00-885-6003