M24-3 X 320mm 圓柱頭螺絲 | 六角驅動 | 部分螺紋 | 12.9級合金鋼 熱黑氧化物 (2入)

I needed a heavy-duty bolt for a custom jig, and these M24-3 socket cap screws fit perfectly with their 320mm length. The partially threaded design and Class 12.9 alloy steel make them feel incredibly solid and precise for the job.

The black oxide finish on these M24 screws is holding up perfectly in my jig setup, no rust after weeks of cutting fluid exposure. They torqued down smoothly with the hex socket drive and the partial threading made alignment a breeze.

Installed these on a heavy-duty fixture at work, and the 12.9 alloy steel shrugged off the torque without any signs of stress. The black oxide finish gave them a nice, consistent look too.