A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5975-00-929-6135
NSN 6150-01-027-7067
NSN 5975-01-608-7093
NSN 5975-01-449-0694
NSN 5945-01-196-6030
NSN 5920-00-836-6983
NSN 5996-01-132-3701
NSN 6145-00-689-9339
NSN 6320-01-397-9995
NSN 6110-01-406-4492
NSN 5910-01-298-1983
NSN 6685-00-212-4531