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 6135-01-074-8220
NSN 7035-01-421-4446
NSN 5930-01-359-5480
NSN 5945-01-408-6705
NSN 5935-01-530-9111
NSN 6620-00-010-8190
NSN 5945-01-398-9559
NSN 5975-01-250-5038
NSN 5855-01-556-7421
NSN 6610-00-556-1870
NSN 6130-01-580-2162
NSN 5960-00-505-1577