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 6620-01-641-1461
NSN 5910-01-601-4756
NSN 6320-01-512-2031
NSN 5965-01-517-2000
NSN 5975-01-265-0686
NSN 6145-01-126-9082
NSN 5990-01-239-1474
NSN 5905-00-635-7438
NSN 6620-01-397-4131
NSN 5935-01-105-1908
NSN 5945-00-262-2968
NSN 5950-01-039-7176