M12-1.75 X 100mm 內六角螺絲 | 六角驅動 | 部分螺紋 | 12.9級合金鋼鍍鋅 (25 / 包)

I needed some sturdy fasteners for a jig I’m building, and these M12 100mm socket cap screws fit perfectly without any wobble. The hex drive seated nicely, and the partial threading gripped just right where I needed it.

The zinc plating looks even and has held up well during assembly, and the hex socket drive seated cleanly on every one. These 12.9 alloy steel screws feel genuinely sturdy for jig work, and the partial threading gave just the grip I needed. I've already ordered a second pack.

These bolts tightened down perfectly on a new tooling setup I was building, the hex socket drive grabbed firmly without stripping. The 12.9 alloy steel and zinc plating give them a solid, durable feel that should hold up well under stress.