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 4140-01-352-8059
NSN 6220-01-351-1555
NSN 5930-00-345-7858
NSN 5930-01-576-8610
NSN 6620-00-689-4456
NSN 6145-01-056-5515
NSN 6135-00-203-9645
NSN 5855-01-020-7982
NSN 5985-01-127-6844
NSN 6145-00-011-2390
NSN 6135-01-398-5922
NSN 5905-00-642-8130