براغي رأس مقبس M3-0.5 × 20 مم | رأس زر بمحرك سداسي | ملولبة بالكامل | فئة 12.9 من سبائك الصلب بأكسيد أسود حراري (600 / عبوة)

I needed a bulk pack for building jigs, and these are exactly what I was hoping for. The black oxide coating seems durable, and every screw in the package threaded cleanly without any grit.

The hex socket drive on these M3 screws makes them so much easier to get torque on compared to Phillips heads. The black oxide finish looks professional and seems to hold up well against oil and handling in my jig build.

These screws are a solid upgrade for my precision assemblies, and the thermal black oxide finish gives them a nice, consistent coating that resists fingerprints. The hex socket drive bites cleanly with a 2.5mm allen key, and all 600 in the bag checked out with no damaged threads.