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.
Dept. of the Navy Classification: Copper washers including spring washers not threaded
NSN 6145-01-286-3540
NSN 5895-00-231-1461
NSN 5855-01-604-9997
NSN 5895-00-269-3848
NSN 5935-00-753-7279
NSN 6145-00-259-1622
NSN 6145-01-317-2226
NSN 5915-01-420-5777
NSN 7035-00-003-7518
NSN 4140-00-958-1252
NSN 5835-01-257-0154
NSN 5905-01-350-1961