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 6150-00-525-3007
NSN 5910-01-432-1134
NSN 4140-01-406-5344
NSN 5835-00-804-0569
NSN 6650-00-842-5463
NSN 5835-01-342-7975
NSN 6145-00-009-0619
NSN 6105-01-062-1422
NSN 7035-01-565-1288
NSN 5905-01-431-2474
NSN 2925-01-633-4048
NSN 5999-01-612-8978