A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5935-01-476-4603
NSN 6145-01-350-2429
NSN 5998-01-580-0933
NSN 6650-01-452-8302
NSN 5999-01-433-8067
NSN 5985-00-644-9752
NSN 5945-00-466-1346
NSN 6220-00-471-4011
NSN 5910-01-030-0478
NSN 5855-00-466-2309
NSN 5905-00-186-9044
NSN 5990-01-373-7545