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 5950-01-134-0674
NSN 6240-01-431-5790
NSN 4140-01-645-1800
NSN 5975-00-754-4142
NSN 6685-00-862-1869
NSN 5996-00-518-4880
NSN 6150-01-372-0542
NSN 6645-00-883-8086
NSN 5925-01-424-5330
NSN 5920-00-934-0639
NSN 6240-01-382-0118
NSN 5990-00-187-5249