Thanks wiomcio, I've been staring at that page for a while now...
The Haas drawing only gives the two lengths (1.780 & 1.386) and the angle (45). No diameters. Haas also says its a MAS 403 P50T-1.
Filtering the MAS 403 types that USST lists on angle, I can whittle 14 lines down to 6. 5 of these 6 have the required lengths of 1.779 to the end and 1.385 to the shoulder. The Haas picture does show a pilot, so I guess that would eliminate one more choice and get me down to 4.
This just does not feel like great way to pick such a critical component.
I was hoping that someone could point me to a more definitive x-ref.