These bugle head deck screws have a chip cavity cut out where the final several threads end at the tip and is designed specifically for joining pieces of pressure treated lumber.

9 x 2-1/2 in. Bugle Head Square Drive Deck Screws – All-Weather – Type 17 – Coarse Threads – 1000qty
These bugle head deck screws have a chip cavity cut out where the final several threads end at the tip and is designed specifically for joining pieces of pressure treated lumber.
These bugle head deck screws have a chip cavity cut out where the final several threads end at the tip and is designed specifically for joining pieces of pressure treated lumber.
Anchor 3 Multipurpose Ancr St-Zn (100 pcs)
https://nsiindustries.com/product/anchor-3-multipurpose-ancr-st-zn-100-pcs/
Anchor 2 Multipurpose Ancr St-Zn (100 pcs)
https://nsiindustries.com/product/anchor-2-multipurpose-ancr-st-zn-100-pcs/
Anchor 1-1/2 Multipurpose Ancr St-Zn (100 pcs)
https://nsiindustries.com/product/anchor-1-1-2-multipurpose-ancr-st-zn-100-pcs/
Rod Coupling 5/8-11 To 1/2-13 Reduce Hx St-zn (Jar 25)
https://nsiindustries.com/product/rod-coupling-5-8-11-to-1-2-13-reduce-hx-st-zn-jar-25/
Rod Coupling 5/8-11 To 1/2-13 Reduce Hx St-zn (Jar 25)
Rod Coupling 1/2-13 To 3/8-16 Reduce Hx St-zn (Jar 25)
https://nsiindustries.com/product/rod-coupling-1-2-13-to-3-8-16-reduce-hx-st-zn-jar-25/
Rod Coupling 1/2-13 To 3/8-16 Reduce Hx St-zn (Jar 25)
Rod Coupling 3/8-16 To 1/4-20 Reduce Hx St-zn (Jar 50)
https://nsiindustries.com/product/rod-coupling-3-8-16-to-1-4-20-reduce-hx-st-zn-jar-50/
Rod Coupling 3/8-16 To 1/4-20 Reduce Hx St-zn (Jar 50)
Rod Coupling 3/8-16 To 5/16-18 Reduce Hx St-zn (Jar 50)
https://nsiindustries.com/product/rod-coupling-3-8-16-to-5-16-18-reduce-hx-st-zn-jar-50/
Rod Coupling 3/8-16 To 5/16-18 Reduce Hx St-zn (Jar 50)