A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5895-01-485-2470
NSN 6620-01-534-2370
NSN 5965-01-318-9474
NSN 6685-01-339-6898
NSN 6685-00-462-4989
NSN 5985-00-348-9988
NSN 6150-00-403-0498
NSN 5910-01-024-1021
NSN 5915-00-636-9785
NSN 6610-00-179-5254
NSN 5985-01-509-1559
NSN 5975-00-872-5814