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 6320-00-925-0558
NSN 6220-01-393-2335
NSN 6240-01-044-5049
NSN 6620-01-386-5914
NSN 6145-01-246-3988
NSN 6135-01-542-5902
NSN 6685-00-404-3715
NSN 6130-01-321-5855
NSN 6130-00-908-1981
NSN 5910-01-411-6189
NSN 5855-00-198-3197
NSN 5960-00-073-1272