براغي رأس أسطواني M24-3 X 40mm | محرك سداسي داخلي | خيط كامل | فولاذ سبائكي فئة 12.9 مطلي بالزنك (10/عبوة)

Used these for a precision assembly at work and the hex socket drive made tightening them a breeze. The zinc plating on these fully threaded screws looks clean and held up well against a little moisture.

I needed a reliable set for a jig I was building, and the Class 12.9 alloy steel feels much sturdier than the standard grade 8 bolts I've used before. The zinc plating seems like it'll resist rust well in my shop.

The hex socket drive on these M24 screws grips perfectly with my Allen key, no slipping at all. The zinc plating looks clean and should hold up well in my jig setup. Exactly the Class 12.9 strength I needed for this tooling application.