براغي رأس سداسي M10-1.5 × 40 مم | رأس مسطح محرك سداسي | ملولبة بالكامل | فولاذ سبائكي درجة 12.9 مطلي بالزنك (100/عبوة)

I needed some high-strength fasteners for a jig I was building, and these 12.9 alloy steel screws handled the torque beautifully without any sign of stripping. The zinc plating looks clean and consistent across all 100 pieces.

The hex socket drive on these screws fits my hex key perfectly without any wobble, making installation on my jig fixture much smoother than with cheaper bolts. They're definitely tougher than the 8.8 grade screws I used before, and the zinc coating looks clean and even across all 100 pieces.

These arrived well-packed and the threading is clean and precise, which made them seat perfectly in my jig. I was glad to find 12.9 grade for this price point, as that’s what I need for high-torque machinery.