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 4140-01-556-8911
NSN 6130-01-185-6985
NSN 6645-01-392-4788
NSN 6220-01-476-9371
NSN 5998-01-322-9013
NSN 5920-01-525-2494
NSN 5950-01-378-7042
NSN 5965-01-101-9094
NSN 5855-00-560-0110
NSN 6110-01-023-2248
NSN 6685-01-315-1860
NSN 6610-00-641-3015