براغي رأس سداسية M16-2 × 150 مم | محرك سداسي | خيط جزئي | سبائك فولاذية فئة 8.8 مؤكسدة حرارياً بالأسود (10 / عبوة)

Had to replace some worn bolts on a milling fixture and these M16s threaded in smoothly without any binding. The black oxide finish feels robust and should hold up well to shop fluids and chips.

Installed these on a heavy jig plate I’m building — the partial thread gives solid clamping without stripping. The black oxide finish seems durable, and the hex socket drive made tightening in tight spots straightforward.

The black oxide finish on these M16-2 screws looks sleek and held up fine during assembly in my jig setup. Hex socket drive made tightening them down a breeze even in a tight spot, and the partial threading gave me just enough grip for the job.