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 4140-01-411-9952
NSN 2925-01-400-2286
NSN 6105-01-256-9136
NSN 5835-01-441-4746
NSN 6105-01-535-3072
NSN 5950-01-454-6628
NSN 5935-00-280-2245
NSN 6610-01-352-6344
NSN 6685-01-290-6468
NSN 2925-01-197-7864
NSN 5950-01-371-3688
NSN 5855-00-149-0766