براغي كاب بمقبس M3-0.5 X 40mm | محرك مقبس سداسي | ملولب جزئياً | فولاذ سبائكي فئة 12.9 أكسيد أسود حراري (300 / عبوة)

Pulling these M3 screws out of the bag, the consistent thread cutting and clean hex socket drive impressed me—they seated perfectly in my jig without any wobble. For the price per piece, this pack is a solid value for precision work.

The black oxide finish on these screws is holding up well in my jig setup, and the hex socket drive makes them easy to tighten without stripping. I’ve already used about fifty from this pack, and every thread has engaged smoothly.

I needed a strong bolt for a tight corner in my robotics frame, and these M3-0.5 screws fit perfectly with zero play. The black oxide coating feels durable and hasn't scratched during installation.