براغي ذات رأس مقبس 7/8-9 × 5 بوصة | محرك سداسي المقبس | صنع في الولايات المتحدة | فولاذ سبائكي مع أكسيد أسود حراري (10 / عبوة)

Put these in a jig for drilling steel and the black oxide finish held up way better than I expected after a full day of use. The threads cut clean and the 5" length was perfect for my setup.

I needed some heavy-duty fasteners for a jig I’m building, and these 7/8-9 x 5" screws threaded in smoothly with no binding. The alloy steel feels plenty tough, and the black oxide coating gives them a nice, uniform look.

The black oxide finish on these 7/8-9 x 5" screws gives them a nice, uniform look and seems durable. I used them for a heavy jig assembly, and the hex socket drive engaged perfectly without any slipping. They feel solid and well-made right out of the package.