براغي رأس مقبس من HOLO-KROME 65020 | 1/4-28 X 5/8" | رأس زر | محرك سداسي المقبس | فولاذ سبائكي مؤكسد أسود حراري (100 / عبوة)

The black oxide finish on these screws gives them a nice, uniform look that stands out from standard zinc-plated hardware. I used them for securing a jig on my mill, and the hex drive seated perfectly without stripping.

I needed a batch of screws for building custom jigs, and these fit the bill perfectly—the hex socket drive made installation quick and clean. The thermal black oxide finish gives them a nice, consistent look, and they held up fine during my first few precision assemblies.

These button heads sit perfectly flush in my jig's counterbores, and the black oxide coating has held up well so far without any chipping. Exactly the right fit for precision tooling work.