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 5960-01-641-5493
NSN 6240-01-010-2991
NSN 6150-00-526-3720
NSN 5915-01-249-6448
NSN 5905-01-350-4304
NSN 5920-00-060-3290
NSN 5990-01-141-3562
NSN 5945-00-419-0184
NSN 7035-01-442-3987
NSN 5965-00-886-8511
NSN 5998-01-205-3802
NSN 6645-01-196-8616