A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6620-00-314-7989
NSN 6150-01-395-2112
NSN 6685-01-457-2081
NSN 5930-01-205-3804
NSN 5950-01-011-4814
NSN 6150-00-714-6151
NSN 5945-00-496-9938
NSN 5920-00-506-1790
NSN 5895-01-069-4908
NSN 7035-00-830-1235
NSN 5855-00-631-4565
NSN 6220-00-964-1042