براغي رأس مجوفة HOLO-KROME 76176 M6-1 × 25 مم | محرك سداسي مجوف | فولاذ سبائكي معالج حرارياً أسود (100 / عبوة)

The black oxide finish on these bolts looks fantastic against my jig frame, and they threaded smoothly into the tapped holes without any binding. For critical tooling assemblies, the consistent M6 sizing gave me real peace of mind.

Installation was a breeze with my hex key—the socket drive gripped perfectly on these M6 bolts. Used them to fasten a jig on my drill press, and the thermal black oxide coating seems to add a nice layer of oil resistance while keeping the price reasonable for a 100-pack.

Used a handful for a small fixture assembly and the black oxide finish held up nicely against minor scratches. They threaded smoothly into tapped holes without binding, which was a relief.