براغي رأس أسطوانية M12-1.75 × 50 مم | محرك سداسي برأس مسطحة | ملولبة بالكامل | فولاذ سبائكي فئة 12.9 مطلي بالزنك (100 / عبوة)

Needed a dozen of these for a high-torque fixture and the hex drive seated perfectly without stripping. The zinc coating looks consistent and the threading was smooth all the way down. These will definitely hold up in the jig I'm building.

Used a full pack on a custom jig frame and every single screw threaded clean with zero stripped heads, even at 60 Nm with a torque wrench. The hex socket fit was snug straight out of the box, and the 12.9 alloy feels seriously tough for the price.

The hex socket drive made torquing these into my fixture jig much easier than dealing with a traditional Allen wrench. The zinc plating looks clean and even, and all 100 pieces were packed without any damage.