It is a #10-32. Very common screw. I get all of mine from home depot. I can't remember the length....just take the other one in with you. It will cost you ~1$ for 2.
__________________ Old Feedback! 58+ 0-
Azodin Zenith- Ndz feedneck, hush bolt cp on/off, fasta w/exalt speed feed.
Azodin Kaos D- ndz feedneck, single frame ALL MY GEAR IS FOR SALE