CMT 392.400.11 Hinge Boring Bit 40mm (1-37/64") x 5/16" Parallel Shank BCS Post Cap w/ Double-Shear Nailing The built-in 1-inch standoff helps

The built-in 1-inch standoff helps prevent rot at the end of the post

Wet-set concrete column base installations

Diameter 2-3/4" (70mm)

and other top-supported builds

hot-dip galvanized fasteners meeting ASTM A153 specifications are required

CMT 392.400.11 Hinge Boring Bit 40mm (1-37/64") x 5/16" Parallel Shank BCS Post Cap w/ Double-Shear Nailing The built-in 1-inch standoff helpsThe CMT 392. 400 is a (Parallel Shank Hinge Boring Bit). Hinge boring bit with parallel (straight) shank for use in router tables, drill presses, and handheld drill machines. For drilling flat bottom hinge cup holes for concealed hinges. Rotation: Right hand (RH). SPECIFICATIONS Diameter (D) 40mm Total Length (L) 60mm Shank (S) 8mm Spurs 2 Number of Teeth 2 Product Type Hinge Boring Bit Series Parallel Shank Hinge Boring Bit Nominal Diameter Cutting