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 6220-01-448-1182
NSN 6145-00-313-9429
NSN 5990-01-443-2931
NSN 5999-01-502-8775
NSN 5975-01-098-7094
NSN 6650-00-944-8925
NSN 5975-01-061-9320
NSN 5835-01-537-1228
NSN 5930-00-872-9598
NSN 5990-01-588-3999
NSN 7035-01-657-7183
NSN 6645-01-320-4138