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 6650-01-580-2501
NSN 7035-01-544-4615
NSN 5930-01-069-9842
NSN 5950-01-419-4534
NSN 6220-00-065-7948
NSN 5905-00-808-0548
NSN 4140-00-540-6731
NSN 6110-00-474-9550
NSN 6620-00-852-8245
NSN 5935-01-211-6302
NSN 5905-01-082-3870
NSN 5855-01-020-7982