Looking to add an accessory to your vehicle that requires making a power or grounding connection at the battery? Try installing a Heavy-Duty Double Treaded Bolt, which can be an ideal option for making multiple electrical connections at the battery. With its Heavy-Duty construction, the doubled threaded bolt offers a long service life and secure gripping strength. This double threaded bolt is an excellent product for the replacement of an original equipment bolt. Product Features:5/16-18 tread made from zinc-plated steelDesigned for top post batteries. Fits both positive and negative postsEasy to installIdeal for accessory power lead connections