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 5920-01-256-5830
NSN 5905-00-275-0361
NSN 5965-01-251-9480
NSN 6145-00-174-3587
NSN 4140-01-368-7097
NSN 5996-00-069-3515
NSN 6135-01-375-6724
NSN 4140-01-442-8479
NSN 6610-01-278-2446
NSN 6650-01-632-3135
NSN 5920-01-126-6500
NSN 6145-00-062-5701