براغي ذات رأس أسطواني M16-2 × 180 مم | محرك سداسي | ملولبة جزئيًا | فولاذ سبائكي فئة 12.9 مطلي بالزنك (10 / عبوة)

Installed these in a heavy-duty jig I'm building and the 12.9 grade alloy steel really took the torque without stripping. The zinc plating hasn't shown any rust yet, even with the coolant splashing around.

The hex socket drive seated perfectly with my Allen key, and the zinc plating looks clean and even across all ten pieces. Threading them into my fixture plates was smooth with no binding, and the 12.9 alloy steel feels rock solid for the torque I’m putting on them.

I used these in a heavy jig build and the 12.9 grade steel handled the torque without any flex at all. The hex socket drive made installation straightforward even in tight spaces.