براغي ذات رأس أسطواني بمقبس سداسي M10-1.5 X 70mm | رأس منخفض بمقبس سداسي | ملولبة جزئياً | فئة 10.9 من سبائك الصلب مؤكسدة حرارياً باللون الأسود

The thermal black oxide finish wiped clean easily and hasn't shown a hint of rust after a few weeks in my damp shop. Threads engaged smoothly into the tapped holes on my jig, and the low head profile gave me just the clearance I needed.

Installed these on a custom press fixture, and the partially threaded design made alignment much easier. The black oxide finish looks clean and seems to resist shop grime well.

Used these to secure a heavy-duty jig on my mill table, and the partially threaded shaft gave just the right grip depth without bottoming out. The black oxide finish already looks like it'll resist rust better than the plain steel ones I had before.