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 6620-00-280-2874
NSN 5975-01-218-8584
NSN 5855-00-010-6492
NSN 5965-01-440-4731
NSN 6150-00-474-1311
NSN 6130-01-406-2946
NSN 6650-00-059-6268
NSN 5930-01-118-6804
NSN 5925-01-139-3151
NSN 6620-00-856-9155
NSN 6620-01-475-3472
NSN 6105-01-306-4618