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 4140-00-723-6418
NSN 6135-01-334-3935
NSN 5925-00-204-0314
NSN 5835-01-532-9373
NSN 5990-01-040-1320
NSN 6135-01-324-7718
NSN 5999-01-527-3852
NSN 6130-01-406-4970
NSN 5960-01-116-2092
NSN 5996-00-739-2315
NSN 6105-01-510-4633
NSN 5920-00-921-8351