A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5925-01-205-4751
NSN 5855-01-577-4091
NSN 5998-00-248-7472
NSN 5895-00-820-1997
NSN 5990-01-061-5618
NSN 6685-01-429-8298
NSN 6135-01-573-7164
NSN 5895-01-400-4153
NSN 2925-00-845-1480
NSN 6320-01-268-3072
NSN 5910-01-543-9105
NSN 6220-00-252-0702