A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 4140-01-065-9367
NSN 5965-01-045-0247
NSN 5975-01-445-9107
NSN 5998-00-536-4873
NSN 6130-01-472-2411
NSN 5915-01-085-0562
NSN 5985-01-012-2025
NSN 6650-00-975-6498
NSN 5910-01-051-0087
NSN 5920-01-264-4950
NSN 5905-01-356-1898
NSN 6685-01-523-2395