National Hardware Door Bolt, Series: V834, Barrel Bolt, 0.32 in Bolt Diameter, 2-1/2 in Bolt Length, 0.046 in Leaf Thickness, Fasteners: (6) NO 7 Oval Head Screws, 2-1/2 in Overall Length, 1-1/2 in Overall Width, 1/2 in Overall Depth, Steel, Zinc Plated, BHMA A138.18, 0.71 in Projection, For Security Applications on Lightweight Doors