M12-1.75 X 150mm 六角頭螺絲 | 8.8級鋼 黃鋅鍍層 | 部分螺紋 (25入/包)

I was a little worried the yellow zinc might look cheap, but it has a nice even finish that resisted my wrench nicely. These bolts seated perfectly into the pre-tapped holes on my press jig, and the 150mm length gave me just enough thread for a lock washer.

The partially threaded design made installing these cap screws a breeze on my equipment assembly project. The hex head held the socket securely without any slipping, and the yellow zinc coating looks durable.

The partial threading made lining them up in my jig so much easier, and the hex head grabbed my socket perfectly with no slipping. Solid feel for machinery work.