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 5990-01-423-8189
NSN 6145-01-575-7462
NSN 5999-01-565-2212
NSN 5895-01-196-8086
NSN 5935-00-083-2912
NSN 5999-00-186-9314
NSN 6105-01-599-9665
NSN 5985-01-025-1951
NSN 5975-00-820-1581
NSN 5990-01-057-4191
NSN 6130-01-352-5644
NSN 5925-01-420-7589