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 6650-01-343-8008
NSN 6620-00-500-0041
NSN 4140-00-542-4611
NSN 5835-01-131-2027
NSN 6135-01-190-2628
NSN 6645-00-063-1996
NSN 6650-01-609-1993
NSN 5996-01-461-3464
NSN 5895-01-383-3224
NSN 5935-01-408-1483
NSN 6130-00-877-5743
NSN 6320-01-307-0467