M6-1 X 15mm 소켓 캡 나사 | 육각 소켓 드라이브 | 풀 스레드 | 클래스 12.9 합금강 아연 도금 (400개/팩)

The threads are flawless on every single screw—I checked a handful under a magnifier and they're all perfectly formed. That Class 12.9 hardness gives me real confidence for my jig builds.

I needed fasteners for a precision assembly and these M6-1 x 15mm screws were exactly the right size. The hex socket drive made them easy to install with a simple Allen key, and the Class 12.9 alloy steel feels incredibly strong.

Got these for a jig I was building and the 12.9 alloy steel strength gives me confidence they won't strip under high torque. The hex socket drive seated perfectly with my allen key, and the 400 count means I won't be running out anytime soon.