How to fix coach screw not fully embedded into post?

Question

Hello, I have a post that has been attached to a stirrup using M10 Coach screws. I used my Ozito hammer drill (photo #4) to screw them in, however, I couldn't screw them in all the way as the drill didn't seem to have enough torque - i tried all the settings on the drill but wasn't successful.

I used 2 screws at the bottom of the stirrup (photo #3) and also one screw each on the sides (Photo #1 & #2). The screws on the bottom are flush with the stirrup, however the sides are not.

The post and stirrup have been set in concrete so I am in a tight spot at the moment. Any advice on how to fasten the screw fully would be much appreciated.

AbdullahFarooq · Answer

Haha🤣

I used the same Ozito to build this entire pergola. I will give it a go with the spanners and report back. Thanks for the prompt advice.

MitchellMc · Answer

Hi @AbdullahFarooq,

I've got to say that I am quite impressed about how far the Ozito managed to drive the coach screws in. That's really quite far outside the drills intended purpose. Coach screws typically need to be installed with either spanners or a socket set. They allow you to put far more torque into the screw to drive it in.

Mitchell