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 4140-01-532-6257
NSN 5925-00-290-4451
NSN 6240-01-149-4861
NSN 6105-01-561-5071
NSN 5999-01-172-4573
NSN 6610-01-645-6275
NSN 5920-01-162-5358
NSN 6320-00-894-1644
NSN 6685-00-377-5334
NSN 6650-00-527-7451
NSN 5910-01-508-3605
NSN 5985-00-009-4685