براغي ذات رأس أسطواني #10-32 × 6-1/2 بوصة | محرك سداسي | ملولبة جزئيًا | فولاذ سبائكي مع أكسيد أسود حراري (1000 / عبوة)

The black oxide finish on these screws looks uniform across the whole box, and the partially threaded design makes them perfect for clamping down my tooling fixtures. Every single one of the thousand threads engaged cleanly on the first pass, which saved me a ton of setup time.

Used a bunch of these to secure a jig on our mill—the partially threaded shank let me get just the right grip without bottoming out. They’ve held up through heavy vibration with no loosening at all. Satisfied with the consistent quality across the whole box.

The hex socket drive really bit down without stripping, and the partially threaded design made mounting jigs much easier. These are solidly built for precision work.