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 6620-01-538-0061
NSN 6220-00-190-6410
NSN 6620-00-583-2687
NSN 4140-01-612-5186
NSN 5910-00-852-0610
NSN 6620-00-010-8190
NSN 5905-00-780-8137
NSN 5990-00-554-0366
NSN 5990-00-653-8595
NSN 6135-01-260-7180
NSN 5835-01-281-7281
NSN 6130-01-518-8734