Temper t4
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 5985-00-848-8143
NSN 5920-01-290-0677
NSN 5915-01-125-7540
NSN 5895-01-213-7243
NSN 5999-00-322-7586
NSN 5950-00-601-9673
NSN 2925-01-454-2046
NSN 4140-01-445-1647
NSN 5945-00-825-5668
NSN 6685-01-066-2901
NSN 5915-01-660-3809
NSN 6685-01-645-6208