براغي ذات رأس مقبس 9/16-18 × 2-1/2 بوصة | محرك مقبس سداسي | ملولبة جزئيًا | فولاذ سبائكي مع أكسيد أسود حراري (25 / عبوة)

These black oxide screws are just what I needed for a jig I was building; the hex socket drive made installation straightforward with my Allen wrench set. The partially threaded design gives good grip where it counts, and the 25-pack is plenty for multiple projects.

Fits perfectly into my mill's T-slot table for securing jigs, and the partial threading gives just the right grip depth. Each screw turned smoothly with a hex key, no stripping or binding at all.

The black oxide finish on these screws is a nice touch, doesn't leave that oily residue you get with some hardware. Threads started clean and seated fully with no binding, and the 2-1/2" length worked perfectly for my jig setup.