براغي رأس أسطواني M18-2.5 × 75 مم | محرك سداسي داخلي | خيط جزئي | فولاذ سبائكي فئة 12.9 مطلي بالزنك (25 / عبوة)

The hex socket drive on these M18 bolts gripped perfectly with my Allen wrench—no stripping or wobble. The partially threaded design made aligning them in my jig assembly straightforward. Exactly the quality I needed for heavy-duty tooling work.

Used these for a custom tooling fixture at work and the partial threading pulled pieces together perfectly. The Class 12.9 alloy steel feels much tougher than the standard bolts I'd been swapping out.

I needed strong bolts for a jig build and these 12.9 alloy steel screws held up perfectly under heavy clamping pressure. The partial thread gave me just the right grip depth without bottoming out.