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 6645-01-400-2119
NSN 6240-01-275-3770
NSN 6130-01-394-4986
NSN 6620-01-193-7774
NSN 5960-00-789-4474
NSN 5945-01-123-9665
NSN 6145-01-516-7165
NSN 6645-01-157-9080
NSN 5920-00-144-8031
NSN 6650-01-592-4057
NSN 5925-01-436-9150
NSN 5855-01-350-4479