M24-3 X 150mm 소켓 캡 나사 | 육각 소켓 드라이브 | 부분 나사산 | 클래스 12.9 합금강 열처리 블랙 옥사이드 (10개/팩)

Put them into a tooling fixture yesterday, and the 12.9 grade steel really holds up under torque without stripping. The partially threaded shaft gave just the right grip length for my application.

The black oxide finish on these M24 screws looks flawless under the workbench light, and the hex socket drive seated perfectly on my torque wrench without any wobble. I've already used four of them on a heavy-duty jig and the 12.9 alloy steel feels reassuringly tough.

The hex socket drive seated perfectly on my driver with zero wobble, and the black oxide finish feels properly oiled out of the bag. These 12.9-grade screws handled the jig clamping torque without a hint of strip, which is exactly what I needed for the precision assembly.