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 6620-01-586-3456
NSN 5998-00-152-6429
NSN 5990-01-047-4083
NSN 6135-01-039-2882
NSN 5855-01-459-9254
NSN 5950-00-834-5088
NSN 4140-01-029-5989
NSN 5999-01-602-8344
NSN 5999-01-072-5609
NSN 2925-00-526-4541
NSN 2925-01-014-0118
NSN 6240-01-359-2721