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 5999-00-243-6500
NSN 4140-01-249-1388
NSN 5996-00-481-7119
NSN 6620-01-081-1042
NSN 6220-01-019-7606
NSN 2925-01-295-9337
NSN 5930-01-441-1324
NSN 5910-01-420-2235
NSN 5965-00-539-7778
NSN 5950-00-153-8875
NSN 5975-01-542-1444
NSN 6135-01-173-2588