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 6620-01-231-9731
NSN 6645-00-451-6462
NSN 6650-01-023-2698
NSN 6150-01-642-6503
NSN 5975-00-148-0914
NSN 6130-01-180-9086
NSN 5930-00-067-9607
NSN 6685-01-004-0708
NSN 5920-01-641-5469
NSN 5855-00-925-7887
NSN 5999-01-425-8749
NSN 5999-00-818-8867