A screw, (as modified) to which has been assembled one or more nonremovable washer(s).
NSN 5985-01-258-5660
NSN 5935-00-628-7229
NSN 6150-00-480-1253
NSN 5920-00-608-9731
NSN 5950-01-282-9852
NSN 6610-01-168-7943
NSN 6135-00-753-2276
NSN 5975-00-976-5780
NSN 6610-01-033-1748
NSN 5895-00-620-0518
NSN 5930-01-329-6264
NSN 6135-00-321-6707