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 
Austria 
Lithuania 
Singapore 
Thailand 
Canada 
Portugal 
Denmark 
Greece 
Turkey Classification: Washers other than lock washers, iron or steel
NSN 7035-01-478-5922
NSN 5975-00-939-5638
NSN 6320-01-415-0953
NSN 6620-01-359-3920
NSN 5975-01-594-5389
NSN 5985-01-432-3342
NSN 7035-01-319-7066
NSN 5960-01-089-8155
NSN 4140-01-151-2158
NSN 5999-01-452-7617
NSN 5975-01-323-7058
NSN 5950-00-054-3227