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 2925-01-187-5480
NSN 2925-00-247-6248
NSN 5945-00-362-0188
NSN 5960-01-077-4553
NSN 6645-01-166-1891
NSN 5985-00-109-9654
NSN 5950-01-428-9651
NSN 2925-01-154-2949
NSN 5990-01-080-0097
NSN 5985-01-351-2964
NSN 5975-01-557-7172
NSN 5990-01-650-9034