براغي رأس أسطواني M12-1.75 × 190 مم | محرك سداسي | ملولبة جزئيًا | سبيكة فولاذ من الفئة 12.9 مطلية بالزنك (10 / عبوة)

The partially threaded shaft on these made mounting my jig plate much easier since the unthreaded section acts as a perfect alignment dowel. I've used cheaper bolts before that stripped, but the 12.9 alloy steel here tightened up with real confidence.

Finally a bolt long enough for my heavy-duty press jig. The 12.9 alloy steel feels incredibly rigid compared to the cheap ones I've used before, and the zinc plating gives them a clean, consistent finish.

Third set I've ordered for our fixture builds—the hex socket drive sits perfectly flush and the zinc coating has held up great against shop grime. Threads cut clean into our tapped holes without any binding, and the 12.9 alloy steel feels rock solid under load.