7/8-9 X 4-1/2" 重型六角頭螺絲 | 美國製造 | A307 B 級鋼本色 | 部分螺紋 (25 個/包)

The partially threaded section on these 7/8-9 bolts seated perfectly in my equipment frame, and the A307 Grade B plain finish handled the torque without stripping. Used about ten of the twenty-five so far, and every one threaded clean from the first turn.

Threads cut clean and the A307 steel feels properly hardened—my equipment assemble didn't strip a single one. The partial threading on the 4-1/2" length grabbed just right for the heavy frame I bolted up.

I needed heavy-duty bolts for a piece of industrial shelving, and these hex cap screws threaded cleanly into the nut without binding. The A307 grade steel definitely feels tougher than the standard stuff I’ve used before.