براغي ذات رأس مقبس M2.5-0.45 × 10 مم | محرك مقبس سداسي | ملولبة بالكامل | فولاذ سبائكي فئة 12.9 مطلي بالزنك (600 / عبوة)

Finally got around to assembling a small jig and these 12.9 alloy steel screws tightened up perfectly without stripping. The zinc plating looks clean and should hold up well in my workshop.

The hex socket drive grips the driver perfectly, no stripping even at full torque on my precision assembly. The zinc plating is uniform across all 600 pieces, and class 12.9 steel feels plenty rigid for tooling work. A solid, dependable batch for the price.

I needed a batch for a custom jig build, and the zinc plating looks clean and consistent across all 600 pieces. The threads engaged smoothly in my aluminum block without any binding.