A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5920-01-371-2070
NSN 5999-01-527-2002
NSN 5985-01-258-5857
NSN 5835-00-155-1379
NSN 6610-01-611-8122
NSN 5950-01-496-0553
NSN 5925-00-262-6087
NSN 5915-01-179-5351
NSN 6105-01-025-5622
NSN 5835-00-286-5432
NSN 6220-01-025-6140
NSN 6685-00-251-1366