Investment cast 316 stainless steel surface mounted barrel bolts provide additional security as either a primary or back-up locking system. Ideal for use on doors, gates and cabinets. They are appropriate for vertical, horizontal, left or right-hand applications. In vertical use, notch in barrel holds bolt in locked position. Countersunk for FH fasteners (not included). A 3-1/16" B 1-1/2" C 5/8" Fastener #8 FH