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 6620-01-303-2563
NSN 5855-00-477-9943
NSN 5975-00-760-1285
NSN 5925-01-504-7731
NSN 5999-01-562-6406
NSN 6610-01-400-3880
NSN 6110-00-269-2696
NSN 5960-00-846-6619
NSN 6145-01-548-4564
NSN 6610-01-313-8296
NSN 6220-00-216-7284
NSN 5895-01-492-6233