M8-1.25 X 45mm 소켓 캡 나사 | 육각 소켓 드라이브 | 클래스 8.8 합금강 열처리 블랙 옥사이드 (200개/팩)

I used a handful of these for a jig I built, and the hex socket drive made tightening them in tight spots a breeze. The 45mm length was exactly what I needed for a secure hold in thicker metal.

The black oxide finish on these screws resists rust better than any plain steel ones I've used before. They threaded perfectly into my tooling fixture and held tight under heavy load. Exactly what I needed for a precision assembly.

I needed a full set for a jig I'm building, and these cap screws fit perfectly into the tapped holes with no binding. The chamfer on the thread start made alignment easy, and the hex socket drive took torque without stripping.