LS50-THa Featherlight focuser set screws

[Grid-Epsilon]

Hi, I am seeking some information and am hoping someone here can help as I am unable to locate the info on the internet.

I have a Lunt LS50-THa fitted with the Starlight dual speed feathertouch focuser and want to know the thread size and type of the 3 set screws that is used to hold the focuser and adapter together and allow it to rotate. I haven't lost any of them yet but am looking to replace them with something that can allow me to tighten and loosen them with fingers alone (it will also allow me to keep spares and track of those little things).