1"-14 x 5" 六角頭螺絲 | 美國製造 | L9 合金鋼黃鋅 | 部分螺紋 (10 個/包)

The threading is clean and precise, and the yellow zinc finish looks tough enough to handle outdoor machinery. Used these to secure a heavy-duty press, and they seated perfectly without any binding—solid grip with a socket.

Put these on a big tractor implement that sees serious vibration and they haven't budged — the Grade L9 alloy steel feels rock-solid compared to the old hardware I was using. The yellow zinc coating is a nice touch for rust resistance too.

Needed a heavy-duty bolt for a press I'm rebuilding, and these partially threaded 5-inch screws grabbed the threads perfectly without binding. The hex head gave my socket a solid bite, and the L9 alloy steel feels like it could take a beating without snapping.