M12-1.75 x 260mm 소켓 캡 스크류 | 육각 소켓 드라이브 | 부분 나사산 | 클래스 12.9 합금강 열처리 블랙 옥사이드 (10개/팩)

Used these for a jig setup on a milling machine and the 12.9 alloy steel handled the torque without any sign of wear. The hex socket drive fit my Allen key perfectly, no rounding at all.

The black oxide finish on these 260mm M12s looks seriously good and hasn't chipped during assembly. They sit flush in my fixture plates without any fuss, and the partial threading gives just the right grip for our tooling setup.

Pulling these M12s tight on a jig fixture, the hex socket gave me a solid bite without any cam-out worries. The thermal black oxide finish looks consistent and clean across all ten screws.