HOLO-KROME 72348 براغي رأس مقبس 7/8-9 × 3-1/4 بوصة | محرك مقبس سداسي | فولاذ سبائكي مؤكسد أسود حراريًا (10/عبوة)

The black oxide finish on these screws handled a greasy jig build without any rust spots appearing. They threaded smoothly into tapped holes on my mill table with no binding.

I needed some longer socket cap screws for a custom jig I’m building, and these 7/8-9 x 3-1/4" ones fit perfectly. The hex socket drive made them easy to tighten even in a tight spot.

The black oxide finish looks great on my machinery repair bench and hasn't chipped during install with a hex wrench. These 7/8-9 screws threaded in cleanly over the full 3-1/4" length without any binding—solid purchase for the price of a ten-pack.