What it is
AN381 cotter pin, Cotter pin, nominal 5/64; A .076" (+.000 -.004); recommended drill hole .094" (+.005 -.002), length .875" (L ±.031)
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