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 5855-00-532-0025
NSN 5910-00-980-0818
NSN 5935-01-013-8974
NSN 5985-00-053-3157
NSN 6320-00-331-7138
NSN 5855-01-325-9507
NSN 5910-01-076-4955
NSN 5985-00-492-3212
NSN 5998-01-597-9100
NSN 6130-00-939-4639
NSN 5910-00-554-1422
NSN 5835-00-148-9719