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 5990-01-568-5565
NSN 6320-01-029-4220
NSN 5998-01-398-4230
NSN 5935-00-312-2576
NSN 6130-01-601-0822
NSN 6240-01-226-2902
NSN 6620-00-167-0963
NSN 5905-01-088-7951
NSN 5930-00-798-5734
NSN 5855-01-366-2429
NSN 5855-00-405-4532
NSN 4140-00-456-0902