M30-3.5 X 260mm 外六角頭螺絲 | 10.9級鋼 無鍍層 | 部分螺紋 (2/包)

Needed these for a heavy-duty jig I'm building, and the 260mm length gives plenty of thread engagement. The hex head seated perfectly in my impact socket without any wobble.

Used one of these to secure a heavy press base and the 10.9 grade handled the torque without any flex. The partial threading made alignment easier than I expected.

Finally found a bolt that didn't strip under serious torque—the 10.9 steel on these M30s held up perfectly for my press rebuild. The partial threading made alignment a lot easier than dealing with a fully threaded rod.