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 5990-01-198-4748
NSN 6105-00-642-2056
NSN 5855-01-516-9915
NSN 6110-01-535-1641
NSN 6645-00-689-8144
NSN 5920-01-280-0738
NSN 5930-01-106-4651
NSN 5965-01-386-2988
NSN 6685-01-359-5732
NSN 5990-01-266-6016
NSN 6320-00-456-0836
NSN 6220-01-110-6527