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 6620-01-510-3501
NSN 5950-01-137-0626
NSN 6240-01-175-3877
NSN 4140-01-649-7326
NSN 6650-01-177-4398
NSN 5905-01-026-7891
NSN 6685-01-038-9385
NSN 5835-01-506-0746
NSN 5998-01-199-7547
NSN 6320-00-506-2314
NSN 6620-01-294-1044
NSN 6220-00-220-5617