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 5920-01-187-2267
NSN 5835-00-003-0295
NSN 5915-01-507-8871
NSN 5985-01-197-4836
NSN 6645-00-478-6509
NSN 5945-01-232-8991
NSN 2925-00-816-8765
NSN 5835-01-384-3206
NSN 4140-00-601-4013
NSN 2925-00-261-5800
NSN 5998-00-299-7876
NSN 6620-00-246-5159