براغي رأس أسطوانية M6-1 X 105mm | محرك سداسي داخلي | سن جزئي | فولاذ سبائكي فئة 12.9 مطلي بالزنك (100/عبوة)

Installed these in a press fixture and the 12.9 alloy steel handled the torque without any sign of stripping. The zinc coating also looks consistent across all 100 pieces in the pack.

Used a dozen of these to rebuild a jig at work and the partial threading made alignment much easier. The zinc plating seems consistent across all 100 screws, no flaking or burrs.

Threads are cut clean and the zinc finish looks even across all 100 pieces, which matters when you’re building tooling that needs to stay corrosion-free. The 12.9 grade gives me confidence torquing them down without worrying about stripping.