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 5965-01-074-6755
NSN 4140-00-146-1633
NSN 5996-01-595-2094
NSN 6320-01-029-4220
NSN 5925-00-834-0272
NSN 5905-01-090-6310
NSN 6650-00-197-7563
NSN 6130-00-815-3516
NSN 5998-00-125-5351
NSN 5950-01-198-6998
NSN 4140-00-336-1728
NSN 6150-00-806-2278