HOLO-KROME 86009 براغي مقبس M4-0.7 × 10 مم | رأس زر محرك سداسي | فولاذ سبائكي أكسيد أسود حراري (100 / عبوة)

The black oxide finish on these is genuinely nice—uniform and not too shiny, so they blend well on my fixture plates. I’ve used about 40 of them so far for jig assembly and not a single stripped head or burr.

These M4 button heads fit perfectly into my 3D-printed jig holes, and the hex drive bites firmly without stripping. The 100-pack means I won’t run out anytime soon for small tooling projects.

The black oxide finish on these screws held up perfectly during assembly—no chips or flaking like cheaper coatings I’ve tried. They threaded cleanly into aluminum without binding, which saved me time on a recent tooling project.