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 4140-01-619-2289
NSN 5960-01-381-2478
NSN 5965-01-210-7784
NSN 5905-01-160-5385
NSN 5920-01-548-0094
NSN 6645-01-067-4393
NSN 6645-01-398-2505
NSN 6145-01-646-1232
NSN 5925-01-431-7057
NSN 5935-01-518-0697
NSN 5950-01-422-0467
NSN 5920-00-221-5668