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 5905-00-259-3112
NSN 6135-01-422-1440
NSN 5910-01-657-1235
NSN 6610-00-822-0431
NSN 5999-01-114-6313
NSN 5920-00-493-8307
NSN 5985-01-501-7298
NSN 5990-01-621-6969
NSN 7035-01-328-7448
NSN 5895-01-145-5358
NSN 5999-00-534-4660
NSN 5990-00-027-7508