براغي رأس أسطوانية M12-1.75 × 80 مم | رأس زر مع محرك سداسي | ملولبة بالكامل | فولاذ سبائكي فئة 12.9 مع أكسيد أسود حراري (50 / عبوة)

The hex socket drive grips like a dream, and the thermal black oxide finish came out of the box clean with zero residue. Used a full bag on a tooling fixture and every single one threaded in smooth with no binding. At this price for fifty, I'm already ordering more.

These button head screws fit my jig perfectly and the black oxide finish looks great on the assembly. The hex drive seated cleanly without any stripping, and the fully threaded length gave me exactly the grip I needed.

Fit perfectly on my jig’s clamping block, and the black oxide finish resists oil stains better than I expected. The 80mm length gave me just enough thread engagement without bottoming out, though the package count is exactly what I needed for one project.