A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5915-01-398-0633
NSN 5905-00-225-6883
NSN 5915-01-159-3136
NSN 5920-01-445-6557
NSN 6220-00-013-9523
NSN 2925-01-233-8545
NSN 5965-01-070-5515
NSN 5950-01-065-6435
NSN 6110-01-511-3029
NSN 6130-01-145-0241
NSN 6130-00-419-1120
NSN 5985-01-373-2489