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 6685-00-188-1991
NSN 7035-01-503-1385
NSN 2925-00-739-3350
NSN 4140-00-267-8813
NSN 6150-00-081-2063
NSN 5965-01-453-7504
NSN 5999-00-205-0918
NSN 5965-01-162-4118
NSN 5975-01-246-8806
NSN 5910-00-463-3525
NSN 6620-01-039-1105
NSN 6240-00-602-5953