5/16-18 X 11" キャリッジボルト | A307 Grade A 亜鉛メッキ鋼 (100本/袋)

The square neck grabbed the wood immediately on these 11-inch bolts, no spinning at all during installation. I used them to join heavy timbers, and the zinc coating should hold up fine in my covered deck project.

Pulling these 11-inch bolts into a cedar deck frame was surprisingly effortless because the square neck really does bite into the wood and prevent spinning, even under heavy torque. The zinc coating looks good and uniform so I'm feeling confident they'll hold up outdoors. Exactly what I needed for a

I needed long bolts for a heavy-duty deck repair, and the 11-inch length was exactly what I was after. The zinc plating looks clean and these feel solid—no stripped threads out of the package.