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 5990-01-050-1102
NSN 6135-00-057-2005
NSN 5905-00-193-9598
NSN 5945-00-917-8301
NSN 7035-00-631-3782
NSN 5935-00-717-6924
NSN 5920-01-235-9522
NSN 6320-01-525-4789
NSN 6650-00-262-2324
NSN 5985-01-075-8575
NSN 5905-01-281-8382
NSN 6240-01-232-7025