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 6145-01-521-7154
NSN 5965-01-015-0744
NSN 5985-01-257-8952
NSN 4140-01-268-7904
NSN 6620-00-086-5223
NSN 5930-01-437-7009
NSN 6610-00-234-9390
NSN 4140-01-293-4711
NSN 5975-01-049-2831
NSN 5990-00-438-5587
NSN 6645-01-551-3703
NSN 5998-00-518-8565