HOLO-KROME 72340 7/8-9 X 2-1/4" براغي رأس كاب | محرك سداسي | فولاذ سبائكي أسود حراري (10/عبوة)

Wrapped a few of these into a jig at work and they seated perfectly — the hex drive grabbed without any slip. The black oxide coating gave them a nice, even finish that should resist rust well enough in our shop.

I needed these for a jig I'm building and the hex socket drive made installation straightforward even in a tight spot. The alloy steel feels solid and the black oxide finish looks like it'll hold up well.

Threads were clean and the black oxide finish looks sharp on my fixture table. The 7/8-9 thread engagement feels rock solid, and the hex socket drive seated perfectly with no wobble. These are going to hold up way better than the grade 5s I was using before.