مسامير رأس أسطوانية M22-2.5 × 180mm | محرك سداسي | ملولبة جزئياً | فولاذ سبائكي فئة 12.9 مؤكسد أسود حراري (10 / عبوة)

The black oxide finish looks proper and uniform across all ten, and the partially threaded length gives me just the right grip for a heavy clamping setup. Threads were clean right out of the pack, no chasing needed. These are going to be my go-to for any big jig work from now on.

Installed these on a custom press jig and the partially threaded shank gave just the right grip depth. The black oxide finish handled the shop oil well without rusting.

I needed some heavy-duty bolts for a custom jig, and these M22s fit perfectly with no wobble. The hex socket drive made installation straightforward, even with limited clearance.