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 
Portugal 
Italy 
Greece 
Turkey Classification: Copper washers including spring washers not threaded
NSN 2925-01-129-1261
NSN 5975-01-006-2808
NSN 5920-01-106-1137
NSN 5945-01-463-8489
NSN 6320-01-452-2394
NSN 5835-01-073-6133
NSN 5990-01-432-4249
NSN 6610-00-527-8892
NSN 5915-01-045-4314
NSN 5930-00-466-3534
NSN 5910-01-618-6407
NSN 5998-01-126-2259