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 5990-00-660-8885
NSN 5895-00-153-0086
NSN 6240-01-425-1939
NSN 5915-01-406-3271
NSN 6110-01-468-6733
NSN 5920-01-499-6301
NSN 5930-01-502-6444
NSN 5920-01-105-4506
NSN 5930-01-350-1477
NSN 5855-00-151-3853
NSN 4140-01-581-0843
NSN 6145-01-370-4485