براغي رأس أسطوانية 1/2-13 × 7 بوصة | رأس مسطح مع محرك سداسي | ملولبة جزئيًا | فولاذ سبائكي مع أكسيد أسود حراري (10 / عبوة)

The partially threaded design on these 1/2-13 x 7" screws made alignment a breeze when mounting a heavy steel bracket, and the black oxide finish seems tough enough to resist rust in my shop. I’ve torqued them down pretty hard with the hex socket drive and they haven’t stripped at all.

Used a couple of these to build a jig for the drill press, and the black oxide finish took the hammering without a single burr. The 1/2-13 threads cut clean into the tapped holes, and the partial threading gave just the right grip for my setup. Solid hardware for the money.

The hex socket drive makes tightening these into tight spots a breeze. Used them for a custom machine jig and the black oxide finish looks clean and professional.