M24-3 x 180mm 소켓 캡 나사 | 육각 소켓 드라이브 | 부분 나사산 | 클래스 12.9 합금강 열처리 흑색 산화 (10개/팩)

Installed these in a heavy jig yesterday and the 180mm length was exactly what I needed for the deep bore. The hex socket drive gave a solid bite without any cam-out during torquing.

The black oxide finish on these screws gives them a solid, professional look right out of the package, and the 12.9 alloy steel feels properly tough for my tooling setup. The hex socket drive seats cleanly with no wobble, and the partial threading is exactly what I needed for a precision assembly. O

Installed these on a heavy-duty jig I'm building, and the 12.9 alloy steel holds torque far better than the 10.9s I used before. The black oxide finish slid right into the tapped holes without any galling.