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 5990-00-665-4105
NSN 4140-01-263-6435
NSN 5945-01-370-4784
NSN 5960-01-538-2082
NSN 6610-00-155-1334
NSN 5930-00-338-9417
NSN 6135-01-180-9611
NSN 2925-01-054-3190
NSN 5895-01-100-1825
NSN 6320-01-344-6511
NSN 5835-01-097-3284
NSN 6220-00-578-6539