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 6150-01-252-6621
NSN 5910-00-060-1196
NSN 4140-01-602-0616
NSN 2925-01-592-5578
NSN 6130-01-259-4661
NSN 6220-00-591-7270
NSN 7035-01-269-4152
NSN 5965-01-555-8007
NSN 6110-00-222-3317
NSN 5920-01-446-1123
NSN 4140-01-451-4180
NSN 5935-01-508-5021