HOLO-KROME 76512 M20-2.5 × 75 مم براغي ذات رأس مقبس | محرك سداسي المقبس | فولاذ سبائكي مع أكسيد أسود حراري (10 / عبوة)

These M20 bolts fit perfectly into the T-slots on my custom jig fixture. The black oxide finish seems more durable than the plain steel ones I’ve used before, and the hex socket gives a solid grip for torquing down without stripping.

Swapped out the old bolts on my press jig for these and the hex socket drive made tightening a breeze. The 75mm length was exactly what I needed for a clean fit in the fixture.

The black oxide finish on these M20 screws looks fantastic and resisted a light scratch test before I even put them to use. They threaded smoothly into my jig without any binding, which was a huge relief. Exactly the heavy-duty hold I needed for that precision assembly project.