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 4140-01-634-0330
NSN 5920-01-107-0838
NSN 5990-00-277-3763
NSN 5990-01-082-3807
NSN 5905-01-286-4265
NSN 5985-01-237-5344
NSN 5935-01-386-2946
NSN 6135-01-414-8831
NSN 5910-01-119-5554
NSN 5920-01-389-1868
NSN 6650-00-775-6560
NSN 5945-00-642-5755