7 x 2 1/4 Simpson Trim-Head Wood Decking Screws - Square Drive 316 SS - 5 lbs Pack (690)

3 USS Flat Washer Zinc Plated

3/8 x 2 1/2 Round Split Drive Anchor Zinc Plated (25)

39/64 x 6 Reduced Shank Drill Bit (1/2 Shank)

7 x 1 1/4 Simpson Trim-Head Wood Decking Screws - Square Drive 305 SS - Bulk Pail (5000) 1/4-20 Socket Cap Screws Alloy 7 x 2 1/4 Simpson7 x 1 1 4 Simpson Trim Head Wood Decking Screws Square Drive 305 SS Bulk Pail (5000) . The type 17 tip provides fast starting and resists splitting in hardwood. Coarse threads run approximately 2 3 up the shank to draw the decking tightly to the substrate. Pre drilling is recommended near board ends to prevent splitting. #1 Square Drive All #7 diameters and 9 x 3 1 2 #2 Square Drive 9 x 4