M30-3.5 X 200mm 外六角螺絲 | 10.9級鋼 原色 | 半牙 (2/包)

The partial threading on these M30 bolts made aligning them in a tight mounting bracket much easier than fully-threaded ones. They seated smoothly without any binding under the socket wrench.

Had to torque these down to 150 ft-lbs on a press frame and the hex head held perfectly without stripping. The 200mm length gave just enough thread engagement for the heavy plate we were mounting. Solid fasteners for industrial work.

The partially threaded design is exactly what I needed for clamping onto a flange without the threads chewing into the surface. Class 10.9 steel feels rock solid, and the hex head took my wrench without any slippage.