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 5975-01-413-8351
NSN 5965-01-486-3564
NSN 2925-01-311-7840
NSN 6240-01-446-7851
NSN 6110-01-408-7821
NSN 5915-00-321-5682
NSN 6650-01-587-5867
NSN 5950-01-152-7510
NSN 5895-00-170-4568
NSN 5915-00-754-4898
NSN 6145-01-460-2400
NSN 6130-01-139-4491