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 5855-01-406-7237
NSN 5915-01-452-7805
NSN 5930-01-511-4412
NSN 5998-01-305-2553
NSN 5950-01-341-9573
NSN 6610-00-596-9883
NSN 2925-01-014-8007
NSN 5855-00-004-0904
NSN 6150-00-160-0952
NSN 4140-00-872-6316
NSN 6220-00-528-7752
NSN 6130-00-235-7830