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 6240-01-566-7525
NSN 5950-00-580-2226
NSN 5998-01-588-9890
NSN 5920-00-552-9145
NSN 6645-01-478-2140
NSN 6220-01-469-6213
NSN 6145-01-224-8341
NSN 7035-00-329-4015
NSN 5895-01-534-4482
NSN 5835-00-698-9824
NSN 6240-01-079-3704
NSN 6145-00-414-1454