Threaded studs are set by tightening the nut

2-4 1/2 A194 2H Heavy Hex Nut Plain

#58 Heavy Duty Drill Bit - Stubby Length

#5 Heavy Duty Jobber Drill Bit

7/16-14 x 5 Hex Cap Screw SS 316 (A4)

8 x 2 Simpson Bugle-Head Wood Decking Screws - 6-Lobe Drive 305 SS - 1 lbs Pack (128) 1/2 Hex Lag Screws Hot Dipped Galvanized Threaded studs are set by8 x 2 Simpson Bugle Head Wood Decking Screws 6 Lobe Drive 305 SS 1 lbs Pack (128) . 6 lobe drive prevents driver bit cam out and stripping in recess. Type 17 tip provides fast starts and prevents splitting in hardwoods. Coarse threads run approximately 2 3 up the shank to help draw the decking tightly to the substrate. Pre drilling is recommended near board ends to prevent splitting. Drive Sizes: #6 T15 #8 T20 #10 T25