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 4140-01-398-0286
NSN 5975-01-103-8178
NSN 5920-01-072-5179
NSN 6320-01-455-2808
NSN 4140-00-501-7833
NSN 5835-01-468-6170
NSN 6650-00-122-1109
NSN 6150-01-222-2593
NSN 5990-00-636-4218
NSN 5905-01-447-8612
NSN 5930-01-379-2396
NSN 5960-00-000-0051