Flight safety critical aircraft part
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: Washers other than lock washers, iron or steel
NSN 6620-01-412-0938
NSN 6220-01-169-0191
NSN 4140-00-832-9043
NSN 5905-00-015-3842
NSN 5855-00-832-9341
NSN 6240-00-945-7347
NSN 5915-01-501-9597
NSN 6110-01-324-3816
NSN 5910-01-458-4855
NSN 5985-01-432-3317
NSN 5895-00-564-2892
NSN 5915-00-170-3819