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 5999-00-433-2036
NSN 6320-01-212-8749
NSN 5945-01-536-0072
NSN 6645-00-191-4978
NSN 6130-00-607-6069
NSN 5996-00-823-9164
NSN 6320-01-114-6054
NSN 5835-01-319-0262
NSN 5905-01-309-8803
NSN 5835-00-113-6090
NSN 5895-01-394-8428
NSN 5999-00-456-0603