A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 7035-01-106-3476
NSN 6220-00-079-0851
NSN 6220-00-025-7743
NSN 2925-01-501-1104
NSN 2925-01-127-0167
NSN 5935-01-626-9221
NSN 6620-01-176-6956
NSN 5930-01-113-1347
NSN 5895-01-432-0306
NSN 5996-00-905-6610
NSN 5910-00-140-4739
NSN 2925-00-878-2196