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 4140-01-291-9342
NSN 5905-01-334-3602
NSN 5920-00-583-2462
NSN 5965-01-019-0939
NSN 5985-00-079-0598
NSN 6135-00-461-3590
NSN 2925-01-535-7235
NSN 5920-00-251-3561
NSN 5975-01-005-5102
NSN 5999-00-947-3468
NSN 5915-01-318-6336
NSN 6610-00-912-6374