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: Cotters, cotter-pins, washers and similar articles, of aluminum
NSN 4140-01-068-0140
NSN 5999-01-176-7302
NSN 7035-00-252-7467
NSN 6320-00-513-8376
NSN 5996-01-389-4067
NSN 5855-01-188-4049
NSN 5950-01-165-0031
NSN 6650-00-161-2444
NSN 5920-01-491-0749
NSN 5996-00-054-1045
NSN 5855-00-145-3307
NSN 5945-00-597-1677