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 5930-01-343-5020
NSN 5920-00-721-0721
NSN 5925-01-210-1678
NSN 6130-01-406-5353
NSN 5965-01-468-1904
NSN 6610-01-236-2510
NSN 6220-01-138-7512
NSN 6240-01-381-1072
NSN 5975-01-551-4737
NSN 4140-01-550-8030
NSN 5920-00-416-5999
NSN 6130-00-352-2317