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 6130-00-509-1591
NSN 5935-01-211-6986
NSN 6645-01-611-5068
NSN 5999-01-229-3372
NSN 6150-00-141-0293
NSN 5945-00-905-8135
NSN 5895-01-381-2532
NSN 4140-01-013-6807
NSN 6135-01-552-1568
NSN 6620-01-487-7435
NSN 6150-00-583-9878
NSN 6620-01-652-4349