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 6610-01-490-2020
NSN 5925-01-507-1745
NSN 5930-01-163-5556
NSN 6145-00-109-8125
NSN 5965-01-468-6186
NSN 6220-01-197-0486
NSN 4140-01-271-9653
NSN 6620-00-509-7935
NSN 6610-01-072-7922
NSN 5925-00-855-3987
NSN 6620-00-809-5156
NSN 2925-01-204-6243