A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5915-01-252-8683
NSN 5999-00-303-9941
NSN 5835-01-376-8454
NSN 6240-01-383-7554
NSN 6610-00-574-6198
NSN 5990-00-559-1822
NSN 6320-01-086-2602
NSN 5895-00-864-8268
NSN 5999-00-753-1071
NSN 7035-01-083-0282
NSN 6685-00-361-9797
NSN 5960-01-313-0681