A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use shim. For items fabricated from ceramic or electrically rated materials by specification or industry standards use insulator (1), washer. Excludes disk, valve, graphite impregnated and lubricated items.
Dept. of the Army 
Dept. of the Air Force 
Dept. of the Navy 
Spain 
Republic of Korea 
Portugal 
Italy 
Greece 
Turkey Classification: Washers other than lock washers, iron or steel
NSN 6145-01-518-5694
NSN 6105-01-356-0858
NSN 7035-01-569-6756
NSN 2925-01-408-6205
NSN 6620-01-580-6681
NSN 5996-01-594-3091
NSN 5835-01-324-0089
NSN 5920-01-184-7530
NSN 5990-01-348-9843
NSN 6110-01-260-8059
NSN 6620-01-476-7355
NSN 6145-01-194-0784