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 5996-01-495-0492
NSN 4140-01-400-3610
NSN 5895-01-113-7725
NSN 5920-00-351-8428
NSN 6620-01-457-9476
NSN 4140-01-099-9675
NSN 5999-01-228-6342
NSN 5920-01-515-5712
NSN 6150-00-199-7327
NSN 6130-00-852-6379
NSN 5920-00-285-0903
NSN 4140-01-556-0762