M30-3.5 x 240mm 六角頭螺絲 | 10.9 級鋼原色 | 部分螺紋 (2 入/包)

The hex head takes a 30mm socket perfectly, so I could torque them down securely on the press fixture without any slippage. The partial threading saved me from having to cut down a fully threaded bolt.

I needed these for a heavy machinery alignment, and the Class 10.9 steel handled the torque without any deformation. The hex head gripped my wrench securely, making installation straightforward.

The partially threaded design made alignment a breeze when I torqued these onto the flange assembly, and the hex head sat flush with my socket without any wobble. Class 10.9 steel felt solid under the wrench, no give at all. Even at 240mm, they cinched down clean and true.