Hi, just about to use some coach bolts to join some timbers. I'm going to use M12 bolts - do I drill 12mm diameter holes for this? Or actually, will I need to drill 13mm diameter?
I don't want to drill too big such that the head + nut starts sinking in. But also I don't want to drill too small such that I'm using a hammer to get the bolts through in the first place!
cheers!
I don't want to drill too big such that the head + nut starts sinking in. But also I don't want to drill too small such that I'm using a hammer to get the bolts through in the first place!
cheers!