M10-1.5 X 70mm 소켓 캡 나사 | 육각 소켓 드라이브 | 부분 나사산 | 클래스 8.8 합금강 열처리 블랙 옥사이드 (100개/팩)

The thermal black oxide finish gives them a nice uniform look, and the hex socket drive seated perfectly with my Allen key. Threads are clean and the partial thread length worked great for clamping two 30mm plates together. Exactly what I needed for a precision assembly.

Installed these on a custom jig I'm building, and the 70mm length paired with the partial threading gave me just the right grip depth. The hex socket drive seated cleanly with no stripping, and the class 8.8 alloy steel feels rock solid for the torque I needed.

The black oxide finish looks professional and seems durable, and the threads are clean all the way through. Only wish the packaging included a plastic tube to keep them organized, but the bolts themselves fit perfectly in my machinery setup.