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 5920-01-570-3321
NSN 6130-01-480-9565
NSN 5998-00-364-6723
NSN 6620-01-428-3930
NSN 5950-01-579-7064
NSN 6650-01-467-8818
NSN 6240-00-117-9957
NSN 5930-01-429-0098
NSN 5930-00-036-3945
NSN 5835-00-537-7780
NSN 5960-00-104-5955
NSN 5975-00-204-9190