براغي رأس أسطوانية مقاس M8-1.25 × 50 مم | رأس مسطح محرك سداسي | خيط جزئي | فولاذ سبائكي فئة 12.9 معالجة حرارياً بأكسيد أسود (100/عبوة)

The hex socket seated perfectly on my driver with zero wobble, and the 12.9 alloy steel feels rock-solid under torque. I used a full pack on a jig build and every single screw threaded cleanly without a single stripped head. These are my new go-to for anything load-bearing.

The black oxide finish looks sharp and the partial threading makes alignment in my jig setup way easier than full-thread bolts. All 100 came out of the pack with clean threads and a snug hex fit.

Needed some hex drive cap screws for a jig I was building, and the Class 12.9 alloy steel feels noticeably tougher than cheaper bolts I've used. The black oxide coating also held up well during assembly without any flaking.