براغي ذات رأس مقبس 7/8-9 × 3-1/4 بوصة | محرك مقبس سداسي | صناعة أمريكية | فولاذ سبائكي مع أكسيد أسود حراري (10 / عبوة)

Installed these on a heavy-duty jig I’m building—the hex socket drive fit my allen wrench perfectly, and the USA-made alloy steel feels solid. No stripping or wobble when torqued down.

The black oxide finish on these screws gives them a nice, uniform look, and the hex socket drive made tightening them into my jig a breeze. They seated firmly without any stripping, exactly what I needed for a heavy-duty assembly.

I needed a handful of strong bolts for a jig rebuild, and these 7/8-9 x 3-1/4" socket cap screws fit perfectly. The hex socket drive made installation straightforward, and the thermal black oxide finish seems durable.