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 5998-00-945-2640
NSN 6150-01-528-7353
NSN 5945-01-504-1974
NSN 5990-01-512-5478
NSN 4140-01-142-4623
NSN 5996-01-652-5952
NSN 2925-01-290-8208
NSN 6220-01-578-4401
NSN 5905-00-515-7244
NSN 6620-01-440-5585
NSN 5920-01-462-4910
NSN 5975-01-081-6489