7/8-14 X 5" 六角頭螺絲 | 5級鋼 黃鋅 | 部分螺紋 (15 顆/包)

These are the first large hex bolts I’ve used with a partially threaded shaft, and they made lining up the machinery base so much easier than dealing with a fully threaded shank. The yellow zinc coating looks clean and hasn’t shown any rust after a week in a damp shop. Exactly what I needed for the

Bought these for a stubborn alignment job on a piece of farm equipment. The partially threaded design made it easy to start by hand before wrenching down—no frustrating cross-threading. Good solid set for heavy work.

The threads cut clean and the yellow zinc coating looks even across all fifteen bolts, no flaking on the corners. I torqued them to spec on a pump stand and the hex head held the socket without any rounding.