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 6135-00-318-8359
NSN 6220-00-118-6112
NSN 6150-01-421-3672
NSN 6240-00-342-9756
NSN 4140-00-175-9114
NSN 5998-01-649-8230
NSN 5855-01-319-9757
NSN 5975-01-483-0843
NSN 5835-01-480-3484
NSN 6685-01-620-1525
NSN 6320-01-547-2743
NSN 5920-01-659-9084