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 5905-01-207-6437
NSN 4140-01-251-0401
NSN 4140-00-193-8879
NSN 5999-01-025-6686
NSN 5996-00-608-9059
NSN 6135-01-071-4923
NSN 5920-00-552-9145
NSN 5835-01-447-2544
NSN 6240-01-534-5829
NSN 5975-01-629-9134
NSN 5998-01-462-1810
NSN 5950-00-894-9636