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 6645-01-452-6760
NSN 5990-01-595-9441
NSN 2925-01-446-6976
NSN 5915-01-350-3696
NSN 5996-01-127-3381
NSN 5910-01-659-4175
NSN 6105-00-161-1834
NSN 6645-00-176-0223
NSN 5915-00-170-6775
NSN 6240-00-509-2485
NSN 5990-00-813-6884
NSN 4140-01-560-0368