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 5975-01-114-8071
NSN 5910-00-958-8330
NSN 5935-01-047-2376
NSN 6240-01-003-8666
NSN 5999-01-487-6564
NSN 6650-01-275-9778
NSN 5910-01-378-6721
NSN 6320-01-141-3791
NSN 5945-00-895-3695
NSN 6105-00-470-9042
NSN 5990-00-067-6791
NSN 6610-01-107-2658