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 5915-01-329-4924
NSN 6110-00-536-4962
NSN 6685-00-860-0977
NSN 6645-01-450-4849
NSN 5950-00-369-0236
NSN 6105-00-915-6601
NSN 5975-00-104-5018
NSN 5999-01-004-6482
NSN 6135-01-222-5464
NSN 6320-01-119-3935
NSN 5905-01-345-0147
NSN 5999-01-418-0577