I recommend the 5/8-11 x 2 Grade 5 Plow Bolt No

7/16-14 x 5 Grade 5 Hex Cap Screw Plain Domestic USA (25)

5/8-11 x 3 1/4 Socket Set Screw Cup Point Alloy

Expertly designed for heavy-duty jobs

050 Button Head Aluminun 5056 Rivet / Steel Mandrel - Package (500)The Button Head Aluminum 5056 Rivet with a Steel Mandrel is designed for high-strength fastening in a variety of applications

1/2-13 x 1 1/2 Socket Head Cap Screws Thermal Black Oxide Alloy Steel Domestic USA - Bulk (500) Simpson ET-3G™ Epoxy Adhesive I recommend the 5/8-11 x1 2 13 x 1 1 2 Socket Head Cap Screws Thermal Black Oxide Alloy Steel Domestic USA Bulk (500) Socket Cap Screws with Thermal Black Oxide finish are made in the USA from durable alloy steel for superior strength and reliability. Featuring a hex drive and corrosion resistant coating, ideal for high performance and structural applications.