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 5950-01-170-3477
NSN 5975-01-125-5844
NSN 6620-01-503-6576
NSN 5996-00-827-8651
NSN 5935-00-666-4877
NSN 4140-00-968-7367
NSN 2925-01-607-4340
NSN 5950-01-193-7284
NSN 7035-01-411-3611
NSN 6620-01-538-7174
NSN 5996-01-575-1501
NSN 5920-01-362-1459