براغي رأس سداسي M12-1.75 × 160 مم | فولاذ عادي فئة 10.9 | ملولبة جزئيًا (15 / عبوة)

The hex heads grabbed my 19mm socket perfectly, no rounding even when I torqued them down hard on a steel frame. Class 10.9 is definitely the real deal for heavy machinery work, and the partial threads gave me just the right grip length.

The partially threaded design made alignment so much easier on my press setup, and the hex heads grabbed the socket cleanly without any stripping. Class 10.9 steel feels rock solid for the load I'm putting on them. These are exactly what I needed.

Installed these on a heavy conveyor frame and the 10.9 grade held torque perfectly—no stripping. The 160mm length was just right for my flange mounts.