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 4140-00-080-8740
NSN 6130-01-391-4572
NSN 6110-01-386-3093
NSN 5935-01-532-1181
NSN 5905-01-429-9943
NSN 6645-00-330-2813
NSN 7035-00-111-4389
NSN 6240-01-231-9243
NSN 5945-00-155-4290
NSN 5999-01-608-0802
NSN 5905-01-484-5168
NSN 5925-00-171-0307