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 5998-01-139-4114
NSN 5915-00-982-7941
NSN 6150-00-226-1868
NSN 5999-01-194-2960
NSN 6620-01-401-5356
NSN 6645-01-503-8211
NSN 6145-01-426-8976
NSN 6145-00-163-9282
NSN 5960-01-149-0687
NSN 5920-01-141-6885
NSN 5935-00-592-6584
NSN 6220-01-019-7606