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 4140-01-339-1293
NSN 5985-01-431-3453
NSN 5950-01-237-1450
NSN 5920-01-267-5306
NSN 6105-00-192-0151
NSN 5965-01-359-5501
NSN 5925-01-432-0149
NSN 2925-01-200-8757
NSN 6685-00-871-1191
NSN 5999-01-350-3648
NSN 5835-00-435-6638
NSN 6135-01-618-2199