M27-3 x 130mm 六角頭螺絲 | 8.8級鋼 無處理 | 部分螺紋（5入/包）

I used these to secure a heavy motor mount, and the 130mm length gave me just enough grip without bottoming out. The hex head fits a standard socket perfectly and the threads are clean right out of the package.

Finally a bolt that doesn't strip under high torque—the class 8.8 steel held up perfectly on my press frame repair. The partial threads make alignment a breeze with thick flanges.

The hex head grabbed my 30mm socket perfectly with no wobble, and the 8.8 steel feels solid for the heavy assembly I'm doing. Threads ran smooth all the way to the partial section, which was exactly the grip I needed.