براغي رأس أسطوانية 1-1/8-7 × 2" | محرك سداسي | ملولبة بالكامل | سبيكة فولاذية بأكسيد أسود حراري (2 / عبوة)

The thermal black oxide finish gives them a nice, uniform look, and the hex socket drive seated the wrench cleanly with zero stripping. I used them for a precision assembly and the fully threaded length made alignment a lot easier. Solid hold, no complaints.

These tightened down perfectly on a jig I was building, and the hex socket gave me way better grip than a standard hex head would have. The black oxide finish looks clean and hasn’t chipped during installation.

I was replacing worn bolts on an old indexing fixture, and the black oxide coating on these made them slide into the threaded holes without any binding. At 2" length and a hex socket drive, they seated perfectly flush with the surface.