براغي رأس مقبس M5-0.8 × 30 مم | رأس زر محرك سداسي | خيط كامل | سبيكة فولاذ من الفئة 12.9 أكسيد أسود حراري (400 / عبوة)

I’ve been using these for a jig I built and the hex socket drive grips the Allen key perfectly every time. For a 30mm fully threaded screw, the 12.9 alloy steel feels plenty tough, and the black oxide coating hasn’t chipped even after tightening and loosening them a few times.

The black oxide finish on these screws looks great and seems like it will resist corrosion well in my shop jigs. The hex socket drive makes them easy to tighten down securely without stripping, and the 12.9 grade steel feels substantial.

These little screws fit perfectly into my custom tooling jig and the black oxide coating seems tough enough to resist rust. The hex socket drive gripped firmly without any stripping when I torqued them down.