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 5905-01-478-6957
NSN 5920-01-401-5315
NSN 6650-00-050-0476
NSN 5998-00-845-4873
NSN 5950-00-853-7852
NSN 6240-01-312-2061
NSN 5930-00-170-5339
NSN 5990-01-595-9441
NSN 5935-00-541-0722
NSN 6240-01-433-1403
NSN 6620-01-399-3615
NSN 6320-00-336-9123