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 4140-01-551-9167
NSN 6110-01-468-5955
NSN 5920-01-097-5448
NSN 6145-00-399-5201
NSN 5950-01-351-2359
NSN 6110-01-139-6930
NSN 5855-01-031-4729
NSN 5930-01-184-7783
NSN 5990-00-590-4196
NSN 5960-01-477-7632
NSN 6110-01-580-8323
NSN 6320-01-562-1599