براغي رأس أسطوانية M6-1 × 80 مم | رأس مسطح محرك سداسي | ملولبة جزئيًا | فئة 10.9 سبائك فولاذ مطلي بالزنك (200/عبوة)

I needed some strong fasteners for jig assembly, and the partially threaded design on these 80mm screws really helps grip securely without bottoming out. The zinc plating looks clean and corrosion resistant right out of the bag.

The flat head sits perfectly flush in my aluminum tooling plate—no snags at all. These 80mm screws are the exact length I needed for that deep fixture assembly, and the 10.9 grade gives me confidence they won't strip under load.

Installed these on a custom jig for a machining project and the hex socket drive grabbed perfectly without stripping. The zinc plating has a nice, consistent finish that feels durable.