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 6620-01-131-1471
NSN 6610-01-652-7448
NSN 6650-01-325-7926
NSN 6620-00-104-6937
NSN 6130-01-551-8266
NSN 5920-00-045-4211
NSN 5960-01-279-0985
NSN 6145-01-169-7289
NSN 5905-01-197-4229
NSN 5910-01-475-4803
NSN 5895-01-196-0285
NSN 6240-01-072-9652