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 5990-01-234-4607
NSN 6105-01-438-6955
NSN 7035-01-578-0866
NSN 5925-01-063-7107
NSN 5905-01-029-2213
NSN 6685-01-641-0031
NSN 5920-00-122-5278
NSN 6145-01-116-8137
NSN 4140-00-517-7902
NSN 5925-01-578-6869
NSN 6685-00-400-7868
NSN 6645-01-633-1852