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.
Classification: Copper washers including spring washers not threaded
NSN 6240-01-439-5363
NSN 6105-00-581-9472
NSN 5945-00-069-3730
NSN 5855-00-436-3852
NSN 5835-01-500-9636
NSN 5925-01-126-4761
NSN 4140-01-012-2460
NSN 6135-00-519-1325
NSN 6105-01-168-9395
NSN 6620-01-388-1430
NSN 5935-01-501-8443
NSN 6620-01-456-0529