Crown Bolt 84890 1/2 Inch-13 Zinc-Plated Coarse Thread Hex Nuts, 25-Count

Steel Fully Threaded Rod, Zinc Plated, 1/2"-13 Thread Size, 12" Length, Right Hand Threads, Made in US

The Hillman Group 811073 Hot Dipped Galvanized Flat Washer, 1/2-Inch, 50-Pack

The Hillman Group 300030 Spilt Lock Zinc Washer, 1/2-Inch, 50-Pack

Crown Bolt 20132 1/2 Inch x 1-1/2 Inch Zinc-Plated Fender Washers, 25-Count

National Hardware4000BC 1/2-13" x 12" Zinc Plated Steel Threaded Rod