براغي رأس مقبس M20-2.5 × 70 مم | رأس مسطح محرك مقبس سداسي | ملولبة بالكامل | فولاذ سبائكي فئة 12.9 أكسيد أسود حراري (25 / عبوة)

The black oxide finish on these screws makes them look serious and professional. I used them to secure a heavy-duty jig on my milling machine and the 12.9 grade alloy steel handled the torque without any issue. They threaded in cleanly with no binding.

I needed some high-strength fasteners for a jig I was building, and these fully threaded M20 screws with the hex socket drive made installation a breeze. The 12.9 alloy steel feels extremely solid, and the black oxide coating gives them a nice, consistent look.

The black oxide finish on these screws feels really durable, and the hex socket drive made tightening them into my jig frame effortless. They threaded cleanly and held firm under heavy load right away.