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 5835-01-431-2178
NSN 7035-00-797-2635
NSN 6150-01-051-6489
NSN 5920-01-293-9921
NSN 6645-01-485-9241
NSN 5855-01-069-4742
NSN 6150-00-618-0171
NSN 5985-01-652-9616
NSN 6145-00-366-5790
NSN 6650-00-775-6560
NSN 5990-01-400-2195
NSN 5930-01-421-3737