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 6110-01-570-5271
NSN 5910-01-545-6648
NSN 6645-01-110-1334
NSN 5925-01-587-4415
NSN 5935-01-412-6280
NSN 5915-00-727-8378
NSN 5855-00-436-3852
NSN 6320-01-072-2073
NSN 5960-01-065-7900
NSN 5990-01-493-4039
NSN 5950-01-047-8435
NSN 5920-01-472-3583