1-1/4-7 X 6" 六角頭螺絲 | 美國製造 | L9級合金鋼黃鋅 | 部分螺紋 (6個/包)

Partially threaded design made it easy to start by hand before I switched to a socket—saved me time on a heavy equipment mount. These feel solid, no wobble in the hex head at all.

The box of these Grade L9 screws has that reassuring heft—the yellow zinc coating is smooth and even, and the hex heads fit my socket perfectly. Used a few to secure a steel bracket, and they drove in clean without any wobble.

Used these to mount a heavy bracket on a concrete wall, and the hex head held up perfectly under torque without stripping. The yellow zinc coating seems tough enough to resist rust in my garage, and the partial threading helped them bite into the framing.