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 4140-01-234-5717
NSN 6145-00-542-6595
NSN 5965-01-333-8560
NSN 5960-01-079-7797
NSN 6610-00-469-8534
NSN 5990-01-538-0923
NSN 5950-00-251-4371
NSN 6685-00-988-8990
NSN 6650-00-879-5834
NSN 6110-01-174-3741
NSN 5975-01-037-2796
NSN 6110-01-099-6893