Thumb Screw for Reflex Sight

Looking to see if anyone has a big thumb screw. Need it to adjust the dot on my reflex sight.
Not sure if it really is a thumb screw. It acts like a bolt, where it screws into a nut.

Looks like this below
Second pic is the one I am missing

I might having something that works, I work with computers quite a bit and I have a couple thumb screws laying around, I dont know if they will fit it but you are welcome to see if they do. Do you come around to an Airdog games?

Yeah, pretty often. I'll be playing at the school game tommorrow, well i guess today actually. Prolly will show up at the arkenstone game on sunday as well. Look up team ARAD, my name's Eric. I appreciate the help.

Unfortunately, I wont be able to go to either of those events. I am sure we can find some way to do it though.