براغي رأس مقبس M24-3 × 340 مم | محرك مقبس سداسي | ملولبة جزئيًا | فولاذ سبائكي فئة 12.9 أكسيد أسود حراري

Threaded them into our jig fixture and the class 12.9 alloy steel held torque without a hint of flex, even under repeated load. The black oxide finish left no residue on my hands during installation, which was a nice surprise for hardware this size. Exactly what precision assemblies need.

The partially threaded design made aligning these into my jig plate much easier than fully threaded screws would have. They torqued down smoothly without any wobble.

The black oxide finish on these screws looks and feels high-quality, and they threaded perfectly into my jig setup without any binding. I’ve used other M24 fasteners before, but these are noticeably sturdier for heavy tooling work.