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 6620-01-658-8133
NSN 6645-01-341-0632
NSN 6105-01-555-7874
NSN 5965-00-735-9315
NSN 5895-00-518-1593
NSN 4140-01-113-0272
NSN 5910-01-235-1364
NSN 5915-00-701-9135
NSN 5945-01-497-2395
NSN 5895-01-574-4722
NSN 5960-01-478-2672
NSN 6650-00-296-4670