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 5930-01-212-9317
NSN 5990-01-242-4493
NSN 5990-01-561-0737
NSN 6610-00-690-6374
NSN 6130-01-398-9882
NSN 4140-01-383-1605
NSN 5910-01-282-3927
NSN 5895-00-080-7616
NSN 6685-01-388-8956
NSN 6320-01-170-4068
NSN 5945-01-474-4335
NSN 5915-01-460-7176