A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6620-01-514-7786
NSN 5855-01-582-7368
NSN 5998-00-473-2035
NSN 5915-01-346-4135
NSN 5915-00-999-9137
NSN 6220-01-051-0363
NSN 5855-01-234-3376
NSN 6220-01-551-2888
NSN 6110-00-611-1111
NSN 6645-01-152-1092
NSN 5910-01-318-5921
NSN 6220-00-615-2168