M4-0.7 x 6mm 버튼 헤드 육각 소켓 캡 나사 | 풀 스레드 | 10.9급 합금강 아연 도금 (600개/팩)

For the money, these are far better than the hardware store bins—the zinc plating is uniform and the threads cut cleanly without any burrs. I used a couple hundred on a jig build and didn't have a single stripped head.

I needed a batch of small, consistent screws for a jig I was building, and these M4 x 6mm socket caps threaded perfectly into the t-nuts I had on hand. The zinc plating looks clean and uniform across all 600 pieces, which saved me from having to sort out any duds.

Finally, a batch of M4 screws that actually drive smoothly without stripping. The hex socket holds the bit perfectly, and the zinc coating looks consistent across all 600 pieces. Exactly what I needed for my jig fixtures.