Clockwise to tighten, counter clockwise to loosen. Remove the wing nut and connect the battery cable. Tighten the nut. And then tighten the screw. Material Zinc Alloy with Brass Plating Zinc Alloy with Brass Plating Brass Electroplated with Copper Brass Electroplated with Copper Brass PBT Plastic Housing&Copper Tin Plating Inner Stud. Leia Mais