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.
Brazil 
Thailand 
Portugal 
Italy 
Greece Classification: Copper washers including spring washers not threaded
NSN 6105-01-064-0269
NSN 5965-01-320-9742
NSN 5965-01-447-0840
NSN 5985-01-382-8791
NSN 5965-00-055-8013
NSN 5910-01-014-9840
NSN 5835-01-327-0770
NSN 5910-01-603-2070
NSN 6220-00-542-4898
NSN 5935-01-424-1778
NSN 5915-01-347-0104
NSN 6130-01-634-0603