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 6145-01-541-5056
NSN 6650-01-568-0299
NSN 6105-01-318-7669
NSN 5999-01-232-3499
NSN 4140-01-588-6189
NSN 5895-01-052-4877
NSN 5930-01-213-4331
NSN 6685-00-856-4109
NSN 5930-01-648-7607
NSN 5855-01-628-6019
NSN 6320-00-456-2092
NSN 5998-00-596-9568