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 4140-01-212-3113
NSN 5930-00-425-0591
NSN 6620-00-955-6122
NSN 5960-01-345-9800
NSN 5855-01-130-1501
NSN 5990-00-991-8723
NSN 5910-01-069-4164
NSN 6145-01-393-5387
NSN 2925-00-459-4519
NSN 5990-00-807-3623
NSN 5990-01-616-5242
NSN 5965-00-321-8456