A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6650-01-214-1710
NSN 4140-00-510-0325
NSN 6645-01-167-5814
NSN 6145-00-772-2955
NSN 5905-01-623-2576
NSN 5965-01-188-7267
NSN 6620-01-492-4271
NSN 6620-01-548-9993
NSN 5930-01-373-8258
NSN 5915-01-567-7175
NSN 5996-01-647-1714
NSN 5925-01-266-1093