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 6320-00-674-1361
NSN 7035-01-521-3449
NSN 4140-01-629-4684
NSN 5975-01-139-5135
NSN 5925-01-459-7882
NSN 4140-01-397-7804
NSN 5920-00-137-2916
NSN 6650-01-164-7651
NSN 5855-01-110-9564
NSN 5960-01-414-1677
NSN 5930-00-393-2511
NSN 5895-01-258-5933