Help identifying bolt for blend door actuator on s13 *pic inside*

[laxcat]

I have an jdm s13 and I am wondering what size bolt is used to hold the blend door actuator on. Mine is lose and flops around when I close the door.

This is a picture from behind the glove box looking up.
http://i1076.photobucket.com/albums/w459/travisskeel/IMG_0408_zpsg5nyuip5.jpg (http://s1076.photobucket.com/user/travisskeel/media/IMG_0408_zpsg5nyuip5.jpg.html)

I tired a few random bolts but nothing seems to fit.

Thanks