M16-2 X 95mm 소켓 캡 나사 | 육각 소켓 드라이브 | 부분 나사산 | 클래스 12.9 합금강 열처리 블랙 옥사이드 (25개/팩)

I used these to replace the bolts on a heavy-duty jig, and the hex socket drive made installation much easier than using a wrench. The 12.9 alloy steel feels incredibly solid, no flex at all under load.

The black oxide finish on these screws is exactly what I wanted for a jig I'm building—the coating looks even and seems pretty resistant to handling. They threaded into my M16 tapped holes smoothly with no binding, and the 12.9 hardness gives me confidence they'll hold up under real load.

For a 95mm screw, the thread quality is spot on—they seated cleanly into my fixture plate without any binding. The black oxide finish has a nice even look and the hex socket took the torque without stripping.