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 5975-00-228-1582
NSN 6610-00-420-8475
NSN 7035-01-240-0541
NSN 5910-00-081-9173
NSN 6645-01-083-4759
NSN 5965-01-643-3280
NSN 2925-01-400-2286
NSN 5895-00-590-8726
NSN 5999-00-502-8095
NSN 5930-00-868-3415
NSN 5895-01-055-7677
NSN 5965-01-003-2641