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 5999-01-645-6863
NSN 6240-00-274-4028
NSN 5965-01-482-8786
NSN 5960-00-161-3728
NSN 5855-00-869-3635
NSN 6145-00-507-3314
NSN 6240-00-166-2271
NSN 2925-01-615-9859
NSN 5950-01-501-0011
NSN 6145-00-291-5388
NSN 5996-01-241-3156
NSN 2925-00-215-4954