Sea Dog Heavy Duty Barrel Bolt Sea Dog Heavy Duty Barrel Bolts are constructed of investment cast 316 stainless steel for superior corrosion resistance and durability. These surface mounted barrel bolts provide additional security as either a primary or back-up locking system. Ideal for use on doors, gates, and cabinets. These bolts are appropriate for vertical, horizontal, left or right-hand applications. Investment cast 316 stainless steel Installs easy Dimensions 221243-1 A 3-116 B 1-12 C 58