M4-0.7 x 12mm 소켓 캡 나사 | 육각 소켓 드라이브 | 풀 스레드 | 합금강 클래스 8.8 아연 도금 (900개/팩)

Used a full bag of these on a custom assembly jig and every single one seated cleanly without any stripping. The hex socket drive bit held perfectly with no cam-out, which is a relief compared to cheaper screws I've tried.

Installed a batch of these on a small jig I'm building and every single one seated perfectly with no wobble. The hex socket drive didn't strip even when I torqued them down pretty tight. No duds in the whole pack of 900, which is exactly what I needed for production work.

I was pleasantly surprised by the consistent thread quality on these M4 screws—every single one threaded smoothly into my fixture without any binding. The zinc plating looks even and should hold up well in my shop environment.