براغي رأس سداسي M16-2 × 210 مم | الفئة 8.8 فولاذ مطلي بالزنك | ملولبة جزئيًا (10 / عبوة)

Threads cut clean on both ends and the zinc coating looks even, no flaking around the hex. These seated perfectly with a standard socket, and the partial thread gave just enough grip for my fixture plate without bottoming out.

Used these to mount a heavy gearbox to a frame and the partial threading made alignment easy before torquing down. The zinc coating on the class 8.8 steel seems solid for indoor use and they all came with clean, undamaged threads.

The hex head fit my socket perfectly and the zinc plating looks clean and even across all ten screws. They threaded smoothly into my equipment frame without any binding.