A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5930-01-099-6097
NSN 5998-01-116-3499
NSN 5935-01-385-2230
NSN 5990-00-170-9553
NSN 6620-00-516-3204
NSN 6240-01-277-7962
NSN 5925-00-035-8469
NSN 5935-01-316-9659
NSN 6110-01-449-8870
NSN 5905-01-411-0345
NSN 5925-00-319-4212
NSN 6685-01-579-6468