5/16-24 x 5/8인치 육각 머리 볼트 | 8등급 강철 황색 아연 | 풀 나사산 (1800개/팩)

The hex heads on these Grade 8 bolts are sharp and uniform, making them easy to grip with a socket. I used a full box assembling a heavy-duty jig, and every single screw threaded in smoothly without any binding. A solid bulk buy for industrial work.

These threads were perfectly clean and the hex heads drove smoothly with a socket; no stripping or galling. Having them fully threaded made alignment a breeze on my frame jig. Exactly what I needed for a critical repair.

I needed a bulk supply of high-strength fasteners for a heavy equipment repair, and these Grade 8 screws came through. The yellow zinc coating looks uniform and the hex heads bite nicely with a socket wrench.