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 5905-01-175-1629
NSN 5915-01-384-3858
NSN 6320-01-481-7322
NSN 5855-01-098-5192
NSN 5930-01-512-9642
NSN 5990-00-524-2293
NSN 6685-00-975-0041
NSN 6645-01-231-9891
NSN 5990-00-112-2440
NSN 5975-00-646-8887
NSN 5950-01-644-4429
NSN 5950-00-197-7705