Extra Heavy Padlockable Barrel Bolt 5 Inch Zinc Plated Steel. This bolt is designed for security on farm buildings, sheds, stockrooms, doors and other heavy-duty installations It can be padlocked for additional protection. Can be mounted with carriage bolts for added security. Surface and universal strikes are provided. Screws included. Bolt diameter is 0.6 inch. Durable steel case, strike and bolt.