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 4140-01-470-1359
NSN 4140-01-148-2815
NSN 6220-00-200-7888
NSN 6620-00-355-1734
NSN 6130-01-144-2838
NSN 2925-01-473-9544
NSN 6130-00-264-1861
NSN 5975-01-247-8846
NSN 5998-00-398-0021
NSN 5945-00-722-6383
NSN 5895-01-546-7611
NSN 5965-01-631-5876