Hillman Galvanized Carriage Bolt Coarse thread. Hot dipped galvanized. Grade 2. Round head. For use in outdoor construction where exposed to weather or water. Great for use in constructing decks, docks, or any outdoor projects. Approved to be used with treated lumber and meets code requirements in NC, SC, and GA. Nuts not included. Coarse thread. Hot dipped galvanized. Grade 2. Round head. For use in outdoor construction where exposed to weather or water. Great for use in constructing decks, docks, or any outdoor projects. Approved to be used with treated lumber and meets code requirements in NC, SC, and GA. Nuts not included. WARNING This product can expose you to lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.