براغي رأس أسطوانية M10-1.5 × 110 مم | محرك سداسي | ملولبة جزئيًا | فولاذ سبائكي فئة 12.9 أسود حراري (50 / عبوة)

The black oxide finish wiped clean with a rag and hasn't shown a hint of rust after a week of oily shop use. The 12.9 hardness is the real deal—they've held torque on a jig I built without any thread stretch. Half the price of what the local fastener shop wanted, and the partial thread makes alignme

I needed a longer shoulder screw for a custom jig, and the 110mm length with a partially threaded shank was exactly what I was looking for. Installation was smooth with a hex key, and a quick check confirmed they’re pulling tight without any stripping.

The black oxide finish on these screws held up perfectly during assembly, even with a lot of handling. They threaded cleanly into my tooling jig without any binding, and the 110mm length was exactly what I needed.