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 4140-01-135-0998
NSN 5905-01-545-4342
NSN 6240-01-131-1154
NSN 5925-01-160-7609
NSN 5930-01-652-9797
NSN 6685-00-816-2423
NSN 5925-01-153-0144
NSN 5998-01-008-0940
NSN 5975-01-037-0460
NSN 5990-01-542-4212
NSN 5960-01-385-4333
NSN 4140-00-963-2855