What it is
AN970 flat washer, Flat washer (large area), fits 7/16 bolt; ID (A) .453"; OD (D) 1.812" (tolerance ±.010), thickness .109"
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