A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6240-01-461-3129
NSN 5975-00-647-4968
NSN 5965-00-179-7886
NSN 5915-01-501-0720
NSN 6620-00-756-6060
NSN 5920-00-322-8618
NSN 5965-00-518-0958
NSN 6135-00-087-5300
NSN 6620-01-290-0197
NSN 5999-01-262-0444
NSN 5905-01-630-5644
NSN 6105-00-432-7384