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 6130-01-276-7780
NSN 6610-01-400-3880
NSN 5855-01-270-6847
NSN 5905-01-517-6617
NSN 4140-01-519-9343
NSN 6620-00-555-3992
NSN 6110-00-393-1212
NSN 5990-00-707-0731
NSN 5950-01-533-3239
NSN 5905-01-055-5582
NSN 5999-00-909-8808
NSN 5925-01-594-1873