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 6650-01-406-9852
NSN 5855-00-466-2309
NSN 4140-00-185-1580
NSN 5905-01-112-2419
NSN 5998-00-007-2885
NSN 6145-01-556-5598
NSN 2925-00-996-2167
NSN 6620-00-269-5168
NSN 5915-00-186-9346
NSN 5996-01-235-1643
NSN 6110-01-600-6624
NSN 6645-01-104-6540