براغي رأس مقبس M24-3 × 90 مم | رأس مسطح محرك مقبس سداسي | ملولبة بالكامل | فولاذ سبائكي فئة 12.9 مؤكسد أسود حراريًا (10/عبوة)

I needed fasteners that wouldn't strip under high torque for a press tool rebuild, and the hex socket drive on these grabbed perfectly. The thermal black oxide finish also looks tougher than the standard coating I'm used to.

Installed these in a heavy jig I’m building, and the thermal black oxide finish held up perfectly against some minor surface rust from my shop’s humidity. The threads cut cleanly into pre-tapped holes without any binding, exactly what I needed for a tight assembly.

The black oxide finish on these feels really robust, and the hex socket drive seated my Allen key perfectly with zero wobble. Used them to secure a jig on my mill and they've held tight through a full day of cutting.