براغي رأس سداسي M20-2.5 × 220mm | فولاد كلاس 10.9 زنك أصفر | ملولب جزئيًا (10/عبوة)

Had to use a socket wrench to get these fully torqued, and the hex head held up perfectly without stripping. The partial threading made alignment a breeze on the steel frame I was repairing.

Installed these on a heavy conveyor frame yesterday — the partial threading made setting the initial depth much easier than dealing with fully threaded bolts. The yellow zinc coating looks consistent and slid into the tapped holes without binding. Plenty of length for thick flanges too.

These bolts fit perfectly in my heavy machinery jig; the partially threaded design gave me exactly the grip I needed for a secure assembly. The Class 10.9 steel feels incredibly strong and the yellow zinc coating is a nice touch for corrosion resistance.