A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5990-00-115-5177
NSN 6685-01-200-3515
NSN 5990-00-391-6207
NSN 5920-01-022-7002
NSN 5835-00-665-3395
NSN 5910-00-271-7588
NSN 5835-01-408-6529
NSN 5855-01-641-2736
NSN 5960-00-432-8989
NSN 7035-01-631-1813
NSN 6240-00-573-7514
NSN 5965-00-521-0511