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 5975-01-496-9985
NSN 7035-01-586-9147
NSN 5999-01-537-3596
NSN 6320-00-994-0179
NSN 6620-01-161-3704
NSN 5999-00-476-5639
NSN 6645-01-334-7326
NSN 5835-00-853-7785
NSN 6145-01-483-0407
NSN 5975-01-347-2416
NSN 6130-00-018-7140
NSN 4140-00-822-4447