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 4140-01-598-6525
NSN 6240-01-477-4015
NSN 5950-00-153-3919
NSN 5950-00-847-0141
NSN 6645-00-435-5610
NSN 4140-00-707-5963
NSN 5930-01-076-4696
NSN 6620-01-483-1138
NSN 6610-01-238-8712
NSN 6645-01-464-8538
NSN 5998-01-408-6921
NSN 6610-00-837-3012