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 5990-01-489-0366
NSN 6135-01-453-5069
NSN 6110-00-628-3583
NSN 5910-00-238-5201
NSN 5910-01-168-9188
NSN 6620-00-248-6950
NSN 2925-01-306-4228
NSN 5930-00-861-9013
NSN 4140-01-576-0184
NSN 7035-01-622-4817
NSN 5950-01-095-1606
NSN 6105-00-268-2878