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 5855-01-482-0440
NSN 5998-01-427-3776
NSN 5905-00-299-2053
NSN 6110-01-489-5482
NSN 5915-00-145-6181
NSN 5920-00-679-7852
NSN 6620-01-633-8443
NSN 6145-00-087-4645
NSN 6685-01-030-3445
NSN 6145-01-348-3779
NSN 5895-00-816-9763
NSN 6650-01-142-3805