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 4140-01-132-9450
NSN 5910-01-458-2001
NSN 5910-00-156-7293
NSN 5920-01-019-3685
NSN 5996-01-192-8606
NSN 7035-00-803-3056
NSN 6610-01-633-8931
NSN 5950-01-378-6332
NSN 5950-01-513-7544
NSN 6240-00-019-3146
NSN 6650-00-269-5000
NSN 2925-01-560-4123