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 6145-01-400-1030
NSN 5975-01-390-3328
NSN 6645-01-352-5675
NSN 6130-00-514-1177
NSN 2925-01-359-4027
NSN 5915-01-580-0308
NSN 4140-00-285-6042
NSN 5990-01-449-7090
NSN 5998-01-462-1810
NSN 5855-01-412-5147
NSN 5915-01-025-8389
NSN 6650-00-597-7313