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 5990-01-143-2518
NSN 2925-01-492-5342
NSN 5975-00-487-5381
NSN 6145-00-643-4519
NSN 5996-01-242-1661
NSN 4140-00-045-3805
NSN 6105-01-430-3258
NSN 6130-00-257-1101
NSN 5985-01-373-7402
NSN 5930-01-432-9542
NSN 5915-01-133-7658
NSN 6620-00-305-8481