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 5855-01-260-7445
NSN 5960-01-372-5609
NSN 5999-01-166-3949
NSN 6105-01-095-6090
NSN 5945-01-386-0499
NSN 6105-01-290-2067
NSN 5960-01-142-8170
NSN 6240-01-301-3087
NSN 6105-01-138-4151
NSN 5965-01-187-8574
NSN 5990-01-254-2936
NSN 6220-01-441-0508