this heavy hex nut is great for heavy-duty engineering and construction projects

1/2-13 x 8 Hex Cap Screw SS 18-8 (A2)

1 piece construction with a 1/4 inch hex shank

3/4-16 x 3 1/4 Socket Cap Screw Alloy

10 x 3 1/2 Simpson Bugle-Head Wood Decking Screws - 6-Lobe Drive 305 SS - Bulk Pail (1000) 1/2-13 Grade 5 Hex Cap Screws Zinc Plated this heavy hex nut is10 x 3 1 2 Simpson Bugle Head Wood Decking Screws 6 Lobe Drive 305 SS Bulk Pail (1000) . 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