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 4140-01-348-1520
NSN 5855-01-059-2710
NSN 5925-00-172-5070
NSN 6320-00-823-2015
NSN 6130-00-263-1827
NSN 6105-01-529-5705
NSN 5950-00-818-3015
NSN 5935-00-400-1803
NSN 6150-01-631-5476
NSN 5925-00-724-9811
NSN 5965-01-063-2051
NSN 6145-00-202-8570