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 6240-00-753-7586
NSN 6135-01-026-9960
NSN 5950-01-532-6769
NSN 6220-01-417-3226
NSN 5985-01-107-6798
NSN 6105-00-595-5378
NSN 4140-01-377-5828
NSN 5895-01-418-9169
NSN 6110-01-345-1574
NSN 7035-01-645-3020
NSN 5835-00-089-0588
NSN 5835-01-010-3103