If your talking about 8" CMU, just use a carriage bolt, you can easily find 12" lengths at home depot. Make sure you drill from the opposite side of the TV mount, just in case you blast a hole the size of a barn door, upon exit; the mount will cover this up. Once you thread your nut, you'll also have to plan to cut any excess bolt length off with a 4" cut-off wheel..
Last edited by rustynails; 02/21/17 12:07 AM.
