https://home.howstuffworks.com/self-tapping-screws.htm
I need to connect some duct work. The article recommends drilling pilot holes. I wonder how large of a hole. I will need to find my driver.
https://home.howstuffworks.com/self-tapping-screws.htm
I need to connect some duct work. The article recommends drilling pilot holes. I wonder how large of a hole. I will need to find my driver.