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 6620-01-106-6510
NSN 2925-01-586-4574
NSN 4140-01-418-2640
NSN 5950-01-106-2417
NSN 5855-00-904-9572
NSN 5835-01-621-2525
NSN 5975-01-604-0297
NSN 6110-00-157-1699
NSN 5998-00-233-6401
NSN 5905-01-593-1206
NSN 5990-01-113-8121
NSN 6610-01-535-0310