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 5835-01-149-6855
NSN 2925-01-656-8217
NSN 6645-01-292-9778
NSN 6650-01-571-5430
NSN 6620-00-420-1061
NSN 5895-01-266-8236
NSN 6130-00-177-6466
NSN 2925-00-233-5644
NSN 5998-01-062-0607
NSN 5975-01-003-8937
NSN 6620-00-631-4599
NSN 5985-00-328-1813