براغي ذات رأس مقبس 7/16-20 × 3-3/4 بوصة | محرك سداسي | ملولبة جزئيًا | فولاذ سبائكي مع أكسيد أسود حراري (50 / عبوة)

I needed a few for a jig I was building, and the hex socket drive made installing them in tight spots so much easier than a standard bolt. The black oxide finish seems durable and they fit perfectly in the pre-tapped holes. Exactly what my tooling project required.

The threading on these cap screws is clean and caught immediately without any wobble, which made them easy to run into my jig fixture. Length is spot-on for the 3/4" stack I needed, and the black oxide finish gives them a solid, uniform look.

The black oxide finish on these screws looks great and seems to resist rust well, and the partially threaded design made assembly much easier than fully threaded bolts. They're solid in my machining fixture and priced right for a 50-pack.