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 5920-01-221-0510
NSN 5905-01-540-7442
NSN 5905-00-554-4325
NSN 6650-01-211-2673
NSN 5855-01-061-6890
NSN 5920-01-137-8371
NSN 6320-01-029-4220
NSN 5999-01-410-7802
NSN 6240-00-451-6921
NSN 5960-01-641-5493
NSN 5990-00-794-9032
NSN 5895-01-133-9279