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 6320-00-593-0379
NSN 5990-00-488-1091
NSN 6610-00-776-3235
NSN 6610-01-521-9801
NSN 5999-01-519-1749
NSN 6220-01-100-5093
NSN 5920-01-612-4771
NSN 4140-01-091-3576
NSN 2925-01-318-8853
NSN 6620-01-371-5040
NSN 2925-00-918-0859
NSN 5915-01-505-5404