براغي رأس أسطواني M16-2 × 60 مم | رأس مسطح بمحرك سداسي داخلي | خيط كامل | فولاذ سبائكي فئة 12.9 مطلي بالزنك (50 / عبوة)

I replaced the bolts on a large press jig with these, and the hex socket drive made installation torque easy to dial in. The 12.9 alloy steel feels plenty tough for the load, and the zinc plating hasn't shown any rust after a few weeks in a damp shop.

Used a few of these to repair a heavy-duty press fixture at work and they seated perfectly with a hex key. The zinc plating looks clean and the 12.9 grade gives me confidence they’ll handle the load without stripping.

These 12.9 grade screws hold my jig perfectly without any stripping, and the zinc plating looks clean and durable. The flat head sits flush against the surface, which is exactly what I needed for a tight assembly.