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: Washers other than lock washers, iron or steel
NSN 5905-01-634-0595
NSN 5996-01-129-2911
NSN 6320-00-538-2132
NSN 5945-01-539-5657
NSN 6645-00-103-2517
NSN 5945-00-062-5662
NSN 5915-01-474-8027
NSN 6645-01-620-4837
NSN 6620-01-413-1951
NSN 6135-00-948-7061
NSN 5985-01-455-3342
NSN 5965-01-063-3442