براغي ذات رأس مقبس بنقطة مقعرة M20 × 100 مم | فولاذ سبائكي مطلي بالزنك (25 / عبوة)

Installed these in a jig I’m building, and the hex socket drive held up to serious torque without stripping. The zinc plating looks clean and didn’t flake during tightening.

The 100mm length was perfect for a heavy-duty bracket I mounted last weekend, and the cup point tip really helped center the bit for a clean start. These alloy steel screws feel solid and the zinc plating has a nice, even finish that should hold up well.

The hex socket drive made torquing these down in a cramped gearbox housing way easier than a standard Allen bolt. The zinc plating looks uniform and the cup point seated firmly without stripping, so these are holding up great after a week of vibration.