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 5990-01-174-6851
NSN 6130-01-144-9495
NSN 6135-00-422-3967
NSN 6620-01-004-7072
NSN 5990-00-359-9839
NSN 5920-01-503-2310
NSN 5945-00-159-6774
NSN 5996-00-681-0490
NSN 5905-01-555-8077
NSN 6130-01-634-0603
NSN 5965-01-441-8826
NSN 6130-01-568-6552