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 5965-01-408-9551
NSN 6620-01-537-4121
NSN 5990-01-574-2522
NSN 5996-01-362-2441
NSN 6145-01-435-3202
NSN 6145-01-186-5591
NSN 6130-00-960-0275
NSN 2925-00-546-3129
NSN 5935-00-055-9366
NSN 5945-01-311-3617
NSN 5930-01-408-8900
NSN 5910-01-193-3862