A washer or cone or disk shape with a centrally located hole, designed to accommodate a flat or oval head screw and provide additional bearing area on the material being fastened. It may or may not have a flush flange feature.
Classification: Cotters, cotter-pins, washers and similar articles, of aluminum
NSN 6320-00-466-0371
NSN 7035-00-050-9962
NSN 5895-01-396-6992
NSN 2925-01-656-8217
NSN 6220-01-381-1074
NSN 6650-01-626-5370
NSN 6645-01-587-4642
NSN 6110-01-119-3555
NSN 6135-01-500-0572
NSN 6650-01-210-2080
NSN 6240-00-737-2775
NSN 5998-01-276-2524