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 6105-00-393-2489
NSN 5925-01-317-6721
NSN 6105-00-901-2455
NSN 5950-01-463-3096
NSN 6220-00-166-5773
NSN 5855-01-100-3272
NSN 6220-01-392-0225
NSN 5999-00-320-6698
NSN 4140-00-113-8215
NSN 6240-01-390-8672
NSN 6130-01-409-2867
NSN 5835-00-834-1286