I am about to commence building of my very first barrel smoker. I was curious if there was any danger associated with using galvanized bolts and nuts for the firebox assembly? Typically I avoid using zinc coated material when there is high heat present. Doing some research online the temperature that zinc turns to zinc oxide is about 1650 degrees. Obviously this smoker will never reach that temperature, the sides would soften and collapse well before that temperature is reached. I was just wondering if there was still any danger present from the zinc. Thank you.