براغي رأس تجويف M8-1.25 X 75mm | رأس زرّي محرك تجويف سداسي | ملولبة بالكامل | فولاذ سبائكي درجة 10.9 أكسيد أسود حراري (100/عبوة)

The black oxide finish is a nice touch—they look clean and resist rust without adding any extra gunk to the threads. I torqued a few into a steel bracket and the Class 10.9 alloy held up perfectly, no stripping or bending. These will be my go-to for this size from now on.

The hex socket drive made torquing them down in tight spots on my tooling fixture much easier than using a standard hex bolt. The black oxide finish seems sturdy and hasn't marred after a few adjustments.

Used these for mounting a custom jig on my mill table, and the class 10.9 alloy steel handled the torque without any issue. The black oxide finish seems durable and the hex socket drove smoothly without stripping.