مسامير عربة 1/2-13 × 2-1/4 بوصة | ملولبة بالكامل | فولاذ عادي درجة A307 (300/عبوة)

The square neck really grabs tight once it’s seated, and the rounded head gives a clean, finished look. This two-and-a-quarter inch length was just right for the heavy timber joint I was working on.

These bolts fit perfectly into the pre-drilled holes on my trailer hitch, and the square neck sank in just right to stop any spinning during tightening. The 300-count pack is great for larger projects, though the plain steel will need some paint if left outdoors.

The square neck under the head grabbed tight on the first pull, no spinning or cursing like with cheaper hardware. Three hundred of them is a solid supply for the price, and the plain steel finish is exactly what I expected for treated lumber.