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 6650-01-306-1121
NSN 5930-01-350-3974
NSN 5835-01-227-2318
NSN 5925-01-616-7552
NSN 5925-00-554-4114
NSN 5835-01-414-3258
NSN 5990-01-272-4091
NSN 5990-01-503-9804
NSN 5985-01-626-5249
NSN 6105-01-338-7761
NSN 6650-01-449-1413
NSN 7035-01-006-0895