براغي رأس أسطواني M24-3 X 140mm | رأس مسطح محرك سداسي | جزئي الخيط | فولاذ سبائكي فئة 12.9 مؤكسد أسود حراريًا (5/عبوة)

The black oxide finish looks properly done—no uneven patches or tool marks, and the hex socket drive seated perfectly with my torque wrench. These M24-3s feel solid enough for my jig setup, and the 140mm length was exactly what I measured for.

The partial threading made all the difference for my jig build; I needed precise clamping without the shoulders bottoming out. Class 12.9 steel is noticeably more rigid than the cheaper screws I've used before.

The thermal black oxide finish on these M24 screws got them through some heavy jig work without any corrosion or seizing issues. The hex socket drive gave me a solid grip during installation even in tight spots. The partial threading made alignment into my precision fixture much easier than a fully