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 5985-01-565-8778
NSN 5950-01-333-2371
NSN 6610-01-314-0719
NSN 5835-00-071-5739
NSN 5950-01-283-3008
NSN 5835-01-251-7301
NSN 6645-01-430-2420
NSN 6145-00-171-1251
NSN 5930-01-376-2271
NSN 5855-01-567-0096
NSN 6105-01-634-0322
NSN 5990-01-212-2037