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 5905-01-544-3579
NSN 6130-00-969-4622
NSN 6620-01-070-2215
NSN 6650-01-607-1283
NSN 6320-00-894-1644
NSN 6645-01-425-2330
NSN 5990-00-236-8152
NSN 6620-00-199-8734
NSN 5975-00-275-1962
NSN 5925-00-912-6493
NSN 5975-00-311-6130
NSN 6240-01-541-0327