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 5930-00-642-9974
NSN 6645-01-423-9361
NSN 6645-01-418-1657
NSN 6620-01-315-2414
NSN 5935-01-069-4890
NSN 5965-01-290-0535
NSN 7035-00-295-0451
NSN 6610-01-658-6611
NSN 5895-01-474-3897
NSN 5998-01-019-4625
NSN 6135-01-418-4156
NSN 7035-00-329-4015