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 5930-00-146-0092
NSN 6645-01-570-3215
NSN 6650-01-334-9410
NSN 5935-01-311-6819
NSN 5925-00-019-9047
NSN 5855-01-191-3404
NSN 5945-00-581-9875
NSN 5990-01-443-2931
NSN 4140-01-407-6595
NSN 5895-00-342-9581
NSN 4140-01-092-0806
NSN 5930-01-326-5856