Simpson 5/8" x 8" Titen HD Heavy-Duty Screw AnchorA high strength screw anchor for use in cracked and uncracked concrete, as well as uncracked masonry. The Titen HD offers low installation torque and outstanding performance. Designed for use in dry, interior, non corrosive environments or temporary outdoor applications. Model No : THDB62800H Material : Zinc Plated Carbon Steel Size (in.) : 5 8 x 8 Drill Bit Dia. (in.) : 0. 625 Wrench Size (in.) : 0. 9375 Recommended Fixture Hole Size (in.) : 3 4 to