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 6130-01-135-5065
NSN 5855-01-495-2670
NSN 5999-00-248-5262
NSN 6610-01-616-2877
NSN 5920-00-230-9128
NSN 6135-00-900-2139
NSN 6320-01-578-6006
NSN 5960-01-046-8308
NSN 4140-01-211-4620
NSN 6685-00-868-5003
NSN 6130-01-278-9305
NSN 5855-00-058-1293