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 5945-01-117-8181
NSN 6240-00-174-1991
NSN 6320-00-405-2348
NSN 6320-01-294-7161
NSN 5960-00-531-6186
NSN 6145-01-041-6562
NSN 5855-00-405-4532
NSN 6650-01-505-6947
NSN 5999-00-083-8630
NSN 6620-00-181-4570
NSN 5950-00-767-9279
NSN 6320-01-578-6006