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 6620-01-554-3987
NSN 5985-01-652-3094
NSN 5905-01-336-6641
NSN 6145-01-535-7062
NSN 6105-01-624-9887
NSN 5920-01-573-6166
NSN 6645-01-347-0450
NSN 6105-00-618-4401
NSN 6130-01-039-1976
NSN 4140-00-173-0706
NSN 5920-00-963-0140
NSN 5930-01-020-0760