A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 7035-01-225-8369
NSN 6620-01-091-9697
NSN 6145-01-196-6779
NSN 4140-00-346-2239
NSN 5975-00-865-3537
NSN 6610-01-555-8364
NSN 5910-00-126-9608
NSN 6135-00-958-7981
NSN 5960-01-102-6746
NSN 6685-01-014-5983
NSN 5999-00-960-7155
NSN 5985-00-115-2989