براغي رأس أسطوانية HOLO-KROME 72368 1-8 × 2" | محرك سداسي | فولاذ سبائكي مؤكسد حراريًا أسود (10 / عبوة)

Installed these on a jig I use for drilling precise holes and the hex socket drive

The thermal black oxide finish on these is exactly what I needed for a jig I'm building—no glare under the work light, and they thread in smoothly without any binding. The hex socket drive grips the Allen key firmly, so I could torque them down without stripping. Solid choice for machinery work.

Putting together a precision assembly, I really appreciated how cleanly these socket cap screws seated with my hex driver. The black oxide finish looks great and should resist corrosion on the tooling fixture I'm building.