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 5915-01-202-7737
NSN 5930-01-482-3038
NSN 6320-01-498-4954
NSN 5945-01-142-7449
NSN 7035-01-421-4446
NSN 6320-01-493-4472
NSN 5920-01-208-6416
NSN 6645-00-778-8719
NSN 6130-01-303-7155
NSN 5998-01-212-4155
NSN 6650-01-327-5113
NSN 5950-01-317-3891