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 6620-01-528-4717
NSN 5835-00-247-0161
NSN 5915-01-025-8170
NSN 5996-01-077-2231
NSN 5950-01-025-9918
NSN 6110-00-097-9140
NSN 2925-01-496-4699
NSN 5985-01-011-2008
NSN 7035-01-322-0221
NSN 6220-01-581-9535
NSN 5835-00-339-3020
NSN 5985-01-071-3878