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 6240-00-177-0385
NSN 5985-00-959-3318
NSN 6610-01-003-2733
NSN 6105-01-471-5600
NSN 5985-01-091-9819
NSN 6130-01-550-9756
NSN 5925-00-644-5546
NSN 5915-01-205-2933
NSN 6645-01-443-4854
NSN 5905-01-227-8333
NSN 4140-00-798-9144
NSN 6240-01-560-0910