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 5945-01-200-7033
NSN 5990-01-553-6859
NSN 5960-00-930-5360
NSN 4140-00-860-1373
NSN 6650-01-211-9642
NSN 5930-01-260-7622
NSN 5998-00-263-2471
NSN 6610-01-352-5500
NSN 5855-01-483-2774
NSN 4140-01-109-1459
NSN 6685-01-357-6358
NSN 5920-01-034-3435