براغي رأس أسطواني M16-2 X 35mm | رأس مسطح بمحرك سداسي | ملولبة بالكامل | فولاذ سبائكي فئة 10.9 بأكسيد أسود حراري (50/عبوة)

I was replacing some bolts on a press tool and these threaded in smoothly without any binding. The black oxide finish gave them a clean, professional look and they’ve held up perfectly under heavy torque.

Used these for a heavy-duty jig fixture at work, and the fully threaded grip is exactly what I needed. The black oxide finish has a nice matte look and hasn't shown any wear after a few assembly cycles.

The hex socket drive seated perfectly with my Allen key, and the black oxide finish wiped clean after a day of machining coolant exposure. Threads ran smooth through the tapped holes without any binding, which is exactly what I need for the precision fixture work these are holding together.