براغي غطاء مقبس M12-1.75 × 80 مم | رأس مسطح مع محرك سداسي المقبس | ملولبة جزئياً | فولاذ سبائكي فئة 12.9 مطلي بالزنك (50 / عبوة)

I've used these in a few jigs and they drive in cleanly without any galling on the threads, the zinc plating holding up fine under clamping pressure. The 80mm length with partial threading gave me just the right grip for my fixture plates, so I've already ordered another pack.

These 12.9 alloy screws have been perfect for building a heavy-duty jig; the zinc plating seems durable and the hex drive makes installation easy. Definitely solid enough for machinery work.

I’ve been using these socket cap screws on a few tooling fixtures, and the hex socket drive makes installation much easier than I expected. The zinc plating gives them a nice, clean finish that resists surface rust so far. They feel solid and precise for my precision assembly work.