Hot-Dip Galvanized nuts are over tapped per ASTM A563

3/8-16 x 3 1/2 Simpson Wedge Anchor 304 SS (50)

1-8 x 3 1/4 Socket Cap Screw Alloy

5/8-11 x 6 Simpson Wedge Anchor 304 SS (20)

7 x 2 1/4 Simpson Trim-Head Wood Decking Screws - Square Drive 305 SS - 5 lbs Pack (690) 1 3/4-5 Socket Cap Screws Alloy Hot-Dip Galvanized nuts are over7 x 2 1 4 Simpson Trim Head Wood Decking Screws Square Drive 305 SS 5 lbs Pack (690) . 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