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 6135-00-553-7995
NSN 6130-01-458-5176
NSN 6150-01-510-6565
NSN 5915-01-282-9847
NSN 6645-01-236-3494
NSN 5905-01-420-6965
NSN 2925-01-122-7812
NSN 5998-01-259-6871
NSN 5985-00-135-4058
NSN 6150-01-570-1733
NSN 5975-01-352-3259
NSN 6620-01-399-3615