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 6320-01-092-4101
NSN 6320-00-004-9158
NSN 5945-01-633-6970
NSN 5999-01-423-8329
NSN 6620-01-011-3449
NSN 5935-01-546-3081
NSN 6645-01-460-8561
NSN 7035-00-275-5604
NSN 6130-01-328-2166
NSN 5925-01-161-3265
NSN 6220-01-220-8088
NSN 6685-00-180-0349