No. 10 screw size
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 6240-01-237-7454
NSN 5950-01-422-6554
NSN 5835-01-478-9428
NSN 6135-01-238-2878
NSN 5925-01-120-3837
NSN 6650-01-283-6238
NSN 2925-01-116-6838
NSN 6135-01-140-8201
NSN 5965-01-512-9925
NSN 5950-00-239-3274
NSN 5965-01-411-9933
NSN 6240-00-435-0433