A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6135-01-490-7704
NSN 6135-00-152-8729
NSN 5925-00-792-9073
NSN 5920-00-165-9160
NSN 6130-01-337-9866
NSN 5905-01-383-9782
NSN 5960-00-926-2637
NSN 5835-01-480-9215
NSN 5925-01-249-8251
NSN 6135-01-159-9705
NSN 6620-01-443-3526
NSN 5915-01-633-9845