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 6610-00-811-6072
NSN 6110-00-997-6289
NSN 5920-01-112-9042
NSN 6620-00-270-3275
NSN 5975-00-188-1164
NSN 6220-00-120-1249
NSN 5965-01-576-9309
NSN 4140-01-602-9257
NSN 6320-01-056-1164
NSN 5975-00-409-9260
NSN 5905-01-464-6254
NSN 6645-01-468-4990