M16-2 x 70mm 六角頭螺絲 | 10.9級鋼 黃鋅鍍層 | 全螺紋 (25 / 包)

Used these to fasten a heavy-duty steel bracket to a concrete floor anchor plate and the 10.9 grade held torque perfectly without any stripping. The yellow zinc coating looks clean and seems corrosion-resistant so far.

Finally got the torque wrench on these easily thanks to the hex head design, and the class 10.9 steel feels reassuringly solid for holding heavy equipment together.

The yellow zinc coating is a nice touch—they look clean and resist rust even in my damp workshop. Threads were smooth all the way, and the hex head sat perfectly in my socket without any wobble. Just finished mounting a conveyor bracket with all 25, and not a single one gave me trouble.