براغي رأس أسطوانية مقاس M22-2.5 × 140 مم | محرك سداسي | ملولبة جزئيًا | سبائك فولاذية فئة 12.9 بأكسيد أسود حراري (10 / عبوة)

The black oxide finish on these M22 screws is exactly what I wanted for my tooling setup—no glare and a nice, consistent look. They're partially threaded, which gave me the grip I needed without bottoming out in the bore. Fit my hex socket drive perfectly and the 12.9 alloy steel feels solid under l

I needed these for a heavy jig build, and the 12.9 alloy steel feels incredibly sturdy under load. The thermal black oxide finish is holding up well against any surface rust in my shop.

The partially threaded design made aligning these in my press fixture much easier than fully threaded bolts would have been. The black oxide finish looks clean and professional, and they seated perfectly with a hex key.