براغي رأس مقبس M12-1.25 × 55 مم | محرك مقبس سداسي | ملولبة جزئيًا | فئة 12.9 سبائك فولاذ أكسيد أسود حراري (50 / عبوة)

Used a dozen of these on a new tooling fixture and the 12.9 alloy steel held up to heavy torque without stripping. The black oxide finish looks clean and doesn't seem to scratch easily.

Bought these for a jig I was building and the hex socket drive made installation much easier than standard Allen bolts. The black oxide finish looks great and the 55mm length was exactly what I needed for my fixture. Pack of 50 should last me through several projects.

The partially threaded shank on these M12 screws made a huge difference when I was building a heavy-duty jig—no more struggling to get full thread engagement. The black oxide finish looks clean and professional against the alloy steel.