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 5945-00-492-0221
NSN 6130-01-269-4845
NSN 4140-00-005-4574
NSN 5925-01-280-5451
NSN 6135-01-317-6021
NSN 6110-00-469-7981
NSN 5855-00-548-4742
NSN 4140-01-196-5232
NSN 5855-01-489-5808
NSN 4140-00-119-1689
NSN 5895-00-490-9840
NSN 6620-01-542-2689