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 4140-01-473-6412
NSN 2925-01-327-3069
NSN 6685-01-299-8836
NSN 6135-00-917-1894
NSN 5990-01-492-6575
NSN 6220-01-529-7268
NSN 6150-01-010-4155
NSN 6130-00-959-4181
NSN 5990-01-411-5930
NSN 5835-01-028-0097
NSN 5950-01-466-0366
NSN 7035-00-968-4848