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 6620-01-574-1862
NSN 6150-00-099-0220
NSN 6645-01-620-4837
NSN 5965-01-281-3895
NSN 5855-00-149-0766
NSN 5975-01-157-1444
NSN 5935-01-537-5953
NSN 5910-01-013-7107
NSN 5975-01-201-0516
NSN 6610-00-944-0346
NSN 5960-00-346-7902
NSN 5855-01-550-1057