مسامير نقل 1/2-13 × 20 بوصة | فولاذ مجلفن درجة A307 (45 / عبوة)

Installed these on a large deck pergola and the square neck under the head really dug in and kept the bolts from spinning. The zinc plating looks good and should hold up outdoors.

Used these for a heavy-duty gate hinge repair, and the 20-inch length was exactly what I needed to get through a thick wooden post. The zinc coating seems solid, no rust after a few weeks of rain.

The square neck on these carriage bolts really dug in tight when I tightened them down, no spinning or stripping like with cheaper ones. I used them to build a heavy-duty gate and the whole thing feels solid—definitely beefier than the smaller hardware I'd tried before.