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 6240-00-287-1988
NSN 5935-00-941-4101
NSN 5915-00-435-8461
NSN 6130-01-554-4138
NSN 4140-00-213-9937
NSN 5996-01-613-1207
NSN 5910-00-740-4286
NSN 5905-01-422-1354
NSN 7035-01-326-3875
NSN 5960-00-504-8574
NSN 5990-00-736-8778
NSN 5935-01-440-5615