HOLO-KROME 730000500 براغي رأس مقبس #6-40 × 1" | محرك مقبس سداسي | سبيكة فولاذ أكسيد أسود حراري (25 / عبوة)

I needed some strong fasteners for a small robotics project, and these #6-40 screws fit perfectly into tight spaces. The black oxide finish is even and seems durable, and they threaded cleanly into tapped holes without any binding.

Picked up a pack for a jig I’m building on the mill, and the hex drive seated perfectly without any stripping. The black oxide finish seems to hold up well to light oil exposure too.

The black oxide finish on these #6-40 screws gives them a clean, uniform look that matches the tooling I’m building. They thread in smoothly and hold tight without any wobble, and the alloy steel feels solid enough for repeated use in my jigs.