while the #2 square drive makes them easy to fasten

It is able to be reused more times than a two-way reversible nut

1/2-20 x 4 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (125)

7/8-9 x 2 1/4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (70)

1 1/2-6 x 11 Socket Cap Screw Alloy

9 x 2 1/2 Simpson Strong-Drive® SD Connector Screw Type 316 Stainless Steel - Box (100) Phillips Bugle Hi-Low Drywall Screws Black Phosphate while the #2 square driveSimpson Strong Drive SD Connector Screws offer superior corrosion resistance with their Type 316 Stainless Steel construction. They are designed for connecting two pieces of wood, helping to ensure strength and stability. This box of 100 screws provides high quality fastening solutions in a variety of projects.