براغي رأس مقبس M12-1.75 × 120 مم | محرك مقبس سداسي | خيط جزئي | فولاذ سبائكي فئة 12.9 مطلي بالزنك (25 / عبوة)

The partial threading made installation in my fixture plate much easier, and the zinc coating seems durable. These bolts fit perfectly into my tooling setup without any wobble.

Finally got these for a stubborn jig build, and the partial thread down to 120mm gave me just the right grip depth without bottoming out. They torqued up smooth using a hex key, no rounding.

Zinc plating looks uniform and the hex socket drive seated perfectly on my torque wrench—no stripping at 70 ft-lbs. These 12.9 alloy cap screws feel dense and precise for jig work, and the partial thread gives solid clamping without bottoming out.