The Split Drive Anchor is a one-piece anchor with a split-type expansion mechanism on the working end

acceptable for ACQ pressure treated lumber

1 1/4-7 x 10 Socket Cap Screw Alloy

#53 Heavy Duty Jobber Drill Bit

8 x 3/4 Square Flat Particle Board Screw w/ Nibs T17 Zinc Plated - Carton (10,000) 5/8 Hex Lag Screws Hot Dipped Galvanized The Split Drive Anchor is8 x 3 4 Square Flat Particle Board Screw w Nibs T17 Zinc Plated Carton (10,000). Wood screws used for interior wood applications. Asymmetrical thread pattern resists material slippage during pull out and vibration. Counter sinking NIBS for a flush finish. Type 17 tip reduces wood splitting. Superior holding power.