براغي رأس مقبس سداسي HOLO-KROME 76488 M20-2.5 × 45 مم | محرك سداسي | فولاد سبائكي مع أكسيد أسود حراري (10 / عبوة)

I needed these for a jig I’m building, and they threaded in smoothly with no binding. The hex socket drive gives a solid grip, even at higher torque.

The black oxide finish on these M20s looks clean and uniform, and the hex socket drive seated perfectly on my torque wrench without any stripping. I used them to bolt down a heavy guide rail and they’ve held firm through a week of vibration, no sign of loosening.

Installed these in a jig for a production run and the hex drive seated perfectly without any cam-out. The 45mm length was exactly what I needed for a through-hole application.