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 4140-01-634-0330
NSN 6620-01-416-9882
NSN 5905-00-922-4892
NSN 5985-01-376-0307
NSN 5960-00-163-9204
NSN 6685-01-316-7227
NSN 6220-01-276-9860
NSN 5960-01-627-6547
NSN 2925-00-290-7052
NSN 5935-01-600-2289
NSN 6135-01-242-2304
NSN 6130-00-342-2416