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 4140-01-192-2978
NSN 6645-01-500-0827
NSN 5895-00-753-5349
NSN 5945-01-171-2950
NSN 5965-01-182-3384
NSN 5855-01-357-7907
NSN 5905-00-506-8332
NSN 5985-00-515-2184
NSN 5895-01-068-8215
NSN 6685-00-804-2042
NSN 5915-00-509-1611
NSN 6645-00-350-8070