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 5855-01-423-0817
NSN 6130-00-903-3578
NSN 5910-01-421-4153
NSN 5985-01-136-7946
NSN 6620-01-222-5555
NSN 5895-00-351-0545
NSN 5999-00-678-2672
NSN 6240-01-532-5978
NSN 6110-01-418-2578
NSN 5998-01-108-4382
NSN 5920-00-602-4905
NSN 5855-01-435-5548