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 4140-00-391-9447
NSN 6145-01-104-5084
NSN 5920-01-317-9321
NSN 6610-01-544-5182
NSN 5915-00-681-6299
NSN 5930-01-612-3704
NSN 6150-01-202-8957
NSN 6240-00-398-0740
NSN 5925-00-056-8931
NSN 6145-01-486-0572
NSN 6150-01-007-6097
NSN 6130-01-338-9750