M4-0.7 X 80mm براغي ذات رأس أسطواني | محرك سداسي | جزئي الخيط | فئة 12.9 سبيكة فولاذ مطلية بالزنك (100 / عبوة)

Had to rethread a jig for a tighter assembly and the Class 12.9 hardness handled the torque without stripping, which was a relief. The zinc coating also seems consistent and should hold up well against light rust around the shop.

The 80mm length is exactly what I needed for a custom jig, and the Class 12.9 alloy steel feels incredibly sturdy. Threading them in was smooth, and the zinc plating has a nice matte finish that resisted my greasy fingers. Great value for a hundred pack.

Finally found some M4s long enough for my jig build—the 80mm length is perfect. The hex socket drive made them easy to torque down without stripping.