Engine shock bracket bolt size

[uberwasser]

Regarding 1979 300D -

My engine shock bracket bolts need to be replaced. While replacing the engine shocks themselves, I noticed that one of the two bolts was not seated all the way and the allen head was stripped, and the second bolt is plain missing. Scratch this up to the kind fella who did a fair bit of half-arse work on my car before I bought it Therefore the bracket is just hanging out, loosely, on the half-inserted single remaining bolt. This is leading to two things - 1) the engine shocks are not doing anything at startup/shutdown so even with my new mounts I'm getting a nice shake and 2) there is a metallic vibrating sound at idle.

What I'd like to know is - what size are these? I only have one original bolt to work with, and before I remove it with an extractor I'd like to have some on hand to replace them and would really like to just get them at Ace.

Part number is 914019008003, shows up as Combination Bolt on EPC and Combination Screw on Pelican. Below is a shot from EPC, with the bolt highlighted:

[uberwasser]

In case anyone happens to search for this in the future, here is the answer, found in the FSM, it's item number 36 in the diagram.