M6-1 X 110mm 內六角螺絲 | 平頭內六角驅動 | 部分螺紋 | 12.9級合金鋼 鍍鋅 (100 / 包)

The hex socket drive on these M6 x 110mm screws made tightening them in a tight jig frame a breeze—no stripped heads even after a few cycles. For class 12.9 alloy steel, the zinc plating looks uniform and hasn't flaked, which is exactly what I wanted for a tooling project.

I needed 110mm bolts for a precision assembly and the partial thread on these made alignment much easier. The hex socket grabbed perfectly with no stripping, and the zinc coating looks clean and even.

These are going straight into my jig build, and the 12.9 grade gives me real confidence under load. Threads cut cleanly into the steel, and the hex socket sat flush without any wobble. Exactly what I needed for precision work.