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 5920-00-170-3576
NSN 5855-01-295-2313
NSN 4140-01-164-4935
NSN 5998-01-332-8664
NSN 6110-01-234-9854
NSN 5998-01-557-5375
NSN 5855-00-688-9954
NSN 5905-01-628-4957
NSN 6645-01-437-9017
NSN 6320-00-004-9158
NSN 6150-00-498-2499
NSN 5925-01-044-5508