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 5950-01-340-2789
NSN 5895-01-521-3934
NSN 4140-00-361-4691
NSN 5960-01-595-6515
NSN 6150-01-148-8142
NSN 6135-01-512-8740
NSN 6130-01-473-7460
NSN 5965-01-302-2719
NSN 5965-01-364-1232
NSN 5855-01-335-8907
NSN 4140-00-184-4812
NSN 6220-01-479-7950