The item is a flight safety critical aircraft part (fscap).
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 6135-00-497-0491
NSN 6645-00-353-6659
NSN 5920-00-493-8307
NSN 4140-01-226-6944
NSN 5960-01-335-1622
NSN 5998-00-081-9929
NSN 5985-01-162-2594
NSN 5945-01-567-9371
NSN 5999-01-171-3037
NSN 5930-01-623-9764
NSN 2925-01-027-1293
NSN 6145-01-610-6892