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 5996-01-445-1359
NSN 5905-00-757-4460
NSN 6240-00-820-1705
NSN 5920-01-345-9362
NSN 6645-00-113-4441
NSN 5950-01-274-1156
NSN 7035-01-151-0265
NSN 6620-01-336-6646
NSN 5996-01-290-6926
NSN 6220-01-633-6765
NSN 5925-00-264-6256
NSN 4140-01-506-0415