M24-3 X 220mm 內六角螺絲 | 平頭六角驅動 | 部分螺紋 | 12.9 級合金鋼鋅鍍層 (5 入)

Installed these in a heavy jig I'm building and the 12.9 alloy steel held torque perfectly without stripping. The zinc plating gave a nice uniform finish that matched the rest of the hardware.

The partial threading on these M24-3 x 220mm screws is spot on for my jig setup—no binding when I clamp down. Zinc plating’s held up fine so far, and the hex socket drive grabbed cleanly without stripping. Just wish they came in a bigger pack, but five’s enough to get me started.

Installing these in our press tooling was straightforward; the hex socket drive caught cleanly without stripping. For the price, the partially threaded design works fine for moderate loads, though I wish the zinc coating were a bit thicker for truly wet applications.