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 5945-00-821-5498
NSN 5920-00-291-1379
NSN 5960-01-353-3302
NSN 5950-01-349-8456
NSN 5990-01-239-5878
NSN 5990-01-527-7640
NSN 5998-00-269-5444
NSN 6320-01-081-7748
NSN 5990-01-301-8394
NSN 5996-01-313-7963
NSN 5975-00-259-0267
NSN 5910-01-578-6247