A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6620-01-383-6494
NSN 5925-01-115-4166
NSN 6135-01-202-8113
NSN 5910-01-412-4949
NSN 5990-00-568-4940
NSN 6135-00-334-4500
NSN 2925-00-084-8462
NSN 5835-01-616-6131
NSN 6135-01-463-2445
NSN 6145-01-407-5938
NSN 5905-01-492-2947
NSN 6620-01-354-8472