A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5855-01-442-7929
NSN 5998-00-970-9133
NSN 4140-01-311-0076
NSN 5990-01-580-2191
NSN 5905-00-412-9651
NSN 5910-01-225-1994
NSN 6610-01-487-4626
NSN 7035-00-445-9657
NSN 7035-00-111-4389
NSN 5910-01-542-3735
NSN 5990-01-239-5878
NSN 5915-00-775-9076