What it is
AN960 flat washer, Flat washer, fits bolt or screw size printed "1-?/8" (not legible); ID (A) 1.640" ±.010; OD (D) 2.375", thickness not decoded: Table I prints T = .016 / .032 / .090 for this size; the aluminum and brass columns are not row-aligned with T on the scan
Equivalents
No equivalent on file: no maker document names one and the government catalog lists none on its stock number.
Install tooling, by who made the part
Not documented for this part number. Ask a tooling specialist →

Reference only: the drawing and its process spec govern. How to read this

Full detail: decode, cited documents, every stock number