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 6145-01-326-4845
NSN 5975-01-027-0253
NSN 6610-01-425-1523
NSN 5930-00-784-4380
NSN 6685-00-952-2027
NSN 5950-01-477-9526
NSN 5855-01-514-9857
NSN 6135-01-238-2878
NSN 5999-00-986-1892
NSN 6620-00-273-8735
NSN 5960-01-366-6246
NSN 5990-01-372-1642