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 6110-01-445-3072
NSN 5975-01-231-1966
NSN 6650-01-246-4262
NSN 4140-01-400-3610
NSN 6650-00-146-6485
NSN 5998-01-180-9071
NSN 6320-00-070-4544
NSN 5960-00-078-9500
NSN 6220-00-900-4439
NSN 5990-01-263-0362
NSN 6645-01-298-4662
NSN 5950-00-350-8373