Does anyone know what fastener is used to hold the rear view mirror bracket on a 1973 240z? Size and pitch would be great if you know it.  If not does anyone know if they are the same bolts as the sun visors.

Thanks in advance for your help

So, I found something that fits.  The screw is an M5 .8      I do not know the correct length.  I happen to find a few 20mm and they appear to work well. 

Thanks anyway.