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 4140-01-653-0130
NSN 6685-01-469-2234
NSN 2925-01-208-0711
NSN 6650-00-950-4107
NSN 5998-00-339-4148
NSN 4140-01-528-2531
NSN 6220-00-504-0789
NSN 5990-01-568-5565
NSN 6145-00-532-6341
NSN 5950-01-496-5187
NSN 5975-01-557-4477
NSN 5999-00-904-8151