براغي رأس أسطوانية M6-1 × 55 مم | رأس زر بمحرك سداسي | خيط كامل | فولاذ سبائكي فئة 12.9 مؤكسد أسود حراريًا (200 / عبوة)

Finally got around to rebuilding my press tooling, and these button heads seated perfectly without stripping. The black oxide finish wiped clean easily and held up to the torque wrench.

Perfect fit on my jig fixture, and the 12.9 alloy steel feels seriously strong when torquing down with a hex key. All 200 screws had consistent threads and a nice, even black oxide coating. Exactly what I needed for a high-stress assembly.

The black oxide finish on these M6-1 screws looks uniform and professional, so they don't gleam like cheap hardware. The 12.9 alloy steel feels rock solid when I'm torquing them down for a jig, and the full threading gives me plenty of grip.