A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 6110-01-364-4590
NSN 5935-01-583-3241
NSN 6130-00-075-2202
NSN 6135-01-606-8140
NSN 5930-00-894-1293
NSN 5910-01-612-7409
NSN 6110-00-066-9614
NSN 5835-00-408-5499
NSN 5905-01-442-4669
NSN 5895-00-442-5044
NSN 5930-00-103-9313
NSN 6130-01-533-2636