براغي رأس سداسي 9/16-12 × 4-1/2 بوصة | فولاذ درجة 5 أصفر زنك | ملولبة جزئياً (25 / عبوة)

Perfect length for bolting a hydraulic pump to its mount—the partial threading gives just enough grip without bottoming out. Finish is consistent across all 25 pieces, no flaking or burrs.

These hex bolts handled the torque without rounding off at all when I tightened them on my press frame. The yellow zinc coating looks clean and seems like it will resist rust well in the shop.

The partially threaded shaft made installation into my heavy equipment frame so much easier than fully threaded bolts would have. These grade 5 screws feel solidly built and the hex head fits my socket perfectly without any slipping.