مسامير عربة | 1/2-13 × 12-1/2" | فولاذ مطلي بالزنك درجة A307 (50/عبوة)

The square neck on these 12-1/2" carriage bolts really digs in and prevents spinning, which was my main frustration with cheaper hardware. The zinc plating looks clean and seems durable so far.

I needed some long carriage bolts for a heavy project and these 12-1/2" ones worked perfectly—the square neck pulled right into the wood just as described. They feel solid with the zinc plating looking clean and even.

The square neck grabbed immediately when I tightened them down into the wood – no spinning at all. These 12-1/2" bolts are solid and the zinc coating looks like it'll hold up fine outdoors.