Screw Size & a cleaning question

[CatoRockwell]

Ok, so I picked up a project for my stepbrother and i need to replace the screw that goes through the the benchy frame, AM/MM rail, and into the stainless steel minimag body. What are the dimensions of this screw? also I have a wider screw that I had to rip out for the foregrip. What are the dimensions for this?

Also it looks like there is some glue residue on the body I am having a hard time getting it off with 00 steel wool. Any recommended solvent that I can soak this body in?

[MANN]

alcohol is good at removing residue (rubbing alcohol). The screw in the body is 10-32 and the screw in the foregrip is 1/4-20 maybe (I know its 1/4", but not 100% sure on the tpi. It is the coarser option of the 2 availible)