براغي رأس سداسي 5/8-18 × 5-1/2 بوصة | صنع في الولايات المتحدة | درجة L9 فولاذ سبائكي زنك أصفر | ملولبة جزئيًا (25/عبوة)

These hex bolts are perfectly machined and the yellow zinc coating looks durable. The partial threads made them ideal for the heavy machinery mount I was securing.

I was a little worried about the thread quality on these, but the yellow zinc coating is smooth and even, and they tightened up perfectly with a socket. These grade L9 bolts are definitely heavy-duty enough for my equipment assembly.

The partially threaded design on these 5/8-18 cap screws made alignment much easier during my equipment repair. The yellow zinc coating looks good and the hex heads hold a socket firmly without slipping.