A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6105-00-136-9158
NSN 2925-01-597-9541
NSN 5975-01-475-7901
NSN 7035-00-135-4758
NSN 4140-00-722-4407
NSN 6610-01-514-7755
NSN 5975-00-975-5902
NSN 6130-01-312-2065
NSN 5935-01-580-5512
NSN 5965-00-402-5208
NSN 5925-01-197-9899
NSN 6610-01-088-5871