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 5990-01-037-9801
NSN 6150-00-473-1520
NSN 6645-01-076-4655
NSN 6320-01-320-3305
NSN 5960-00-908-8658
NSN 5999-00-034-7484
NSN 5935-00-252-2739
NSN 6685-00-256-2755
NSN 5996-00-561-9163
NSN 5985-01-476-8978
NSN 6645-01-602-0000
NSN 5895-00-248-7477