براغي رأس سداسية 1/2-13 × 12" | فولاذ درجة 5 مطلي بالزنك الأصفر | جزء ملولب جزئيًا (55/عبوة)

The threading is clean and consistent on all 55 bolts, making assembly much smoother than I expected for bulk hardware. I used these on a heavy equipment frame and the Grade 5 steel has held up perfectly under torque.

My only real complaint is that I had to dig out my big wrench, but the 12-inch length and partially threaded design made quick work of the machine base assembly. Drove them in straight with no stripping, and the yellow zinc means they'll match the rest of the steel plating.

The yellow zinc coating is a nice touch—these look clean and professional out of the box, and the hex heads grab a socket firmly without slipping. The partial threading makes them handy for clamping down thick plates without bottoming out. A solid 12-incher for the price.