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 6145-00-427-7201
NSN 6320-01-631-7828
NSN 6620-00-690-2546
NSN 6240-00-960-0315
NSN 5925-01-374-1489
NSN 5975-00-981-2486
NSN 5835-00-007-6824
NSN 5935-00-282-7967
NSN 5998-01-268-6775
NSN 5998-00-582-5066
NSN 6620-01-224-1617
NSN 5950-01-588-3406