براغي رأس مقبس مقاس M14-2 × 80 مم | محرك مقبس سداسي | ملولبة جزئيًا | فولاذ سبائكي من الفئة 12.9 مع أكسيد أسود حراري (25/عبوة)

The partially threaded design made these perfect for aligning mounting brackets on a heavy press, and the hex socket drive allowed me to torque them down precisely without stripping. They feel incredibly solid during assembly.

I was worried about the heat treat on these being consistent, but they all cut cleanly and the black oxide finish is uniform. The hex socket drove home smoothly without any stripping, and the partially threaded section lined up perfectly with my jig plate.

The box showed up with all 25 screws perfectly coated in that thermal black oxide, and the hex socket drive seated my Allen key without any wobble. Used them to bolt down a jig plate and they torqued up clean to spec.