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 6110-01-234-2137
NSN 6135-01-609-6476
NSN 6105-01-153-0830
NSN 6240-01-607-4651
NSN 2925-01-381-5307
NSN 5960-01-450-8539
NSN 5990-01-209-3955
NSN 5975-01-062-2174
NSN 5975-01-103-5397
NSN 5855-01-359-5727
NSN 5965-00-182-7928
NSN 4140-00-959-4255