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 5985-01-540-8321
NSN 5950-01-577-0320
NSN 6105-01-363-4810
NSN 4140-01-435-2637
NSN 5990-01-181-9886
NSN 7035-00-915-5798
NSN 6150-00-300-0395
NSN 5945-01-520-9981
NSN 5965-00-503-2991
NSN 6650-01-591-8574
NSN 5855-00-832-9341
NSN 5996-00-115-2932