براغي ذات رأس أسطواني HOLO-KROME 76418 M12-1.75 X 140mm | سداسي داخلي | فولاذ سبائكي مؤكسد أسود حرارياً (25 / عبوة)

The thermal black oxide finish on these screws looks sharp and seems to repel rust so far. I just used them to bolt down a heavy fixture in my shop, and the hex socket drive made tightening them in tight spots a breeze with zero stripping.

Perfect fit for the hardened steel jig I’m building—the black oxide finish gave them a smooth, uniform look right out of the box. Threads engaged cleanly with minimal resistance, no galling at all.

Used these to bolt down a pair of fixtures on a jig table and the 140mm length gave me just the right grip without any slop in the threads. The black oxide finish looks sharp and hasn't chipped during assembly.