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 5910-00-897-0401
NSN 5950-01-454-4889
NSN 6685-01-144-4384
NSN 6320-00-261-9136
NSN 5999-00-825-2562
NSN 6650-00-153-3155
NSN 4140-00-459-1564
NSN 6150-01-160-8091
NSN 5930-01-485-6097
NSN 6645-00-900-5830
NSN 6135-01-096-1452
NSN 5960-00-727-3561