براغي رأس مقبس 7/8-9 × 4-1/2 بوصة | محرك مقبس سداسي | صناعة أمريكية | فولاذ سبائكي أكسيد أسود حراري (10 / عبوة)

I needed a few extra-long screws for a jig I was building, and these 7/8-9 x 4-1/2" guys fit perfectly in the hex socket drive. The alloy steel feels really sturdy, and the black oxide finish looks clean. Definitely doing the job for my tooling project.

The black oxide finish on these screws is flawless and really holds up to oil and grime in my shop. They threaded smoothly into tapped holes on a fixture I'm building, no binding at all. For the price per piece, you're getting serious US-made quality.

Installed these on a heavy-duty jig I’m building, and the black oxide finish feels tough and consistent. The hex socket seated perfectly with no wobble, even at full torque.