M8-1 x 25mm 소켓 캡 나사 | 육각 소켓 드라이브 | 전체 나사산 | 클래스 12.9 합금강 열처리 블랙 옥사이드 (200개/팩)

After struggling with stripped heads on cheaper bolts, I finally tried these Class 12.9 screws and the hex socket drive gripped perfectly the first time—no cam-out at all. The thermal black oxide finish also held up well during assembly without flaking.

These M8-1 x 25mm socket cap screws have been holding up perfectly on my jig setup. The Class 12.9 alloy steel feels really sturdy and the threading went in smoothly without any binding. Definitely a solid buy for precision work.

Installing these in my jig fixture was a breeze — the hex socket drive grabs perfectly without stripping, and the 12.9 grade feels rock-solid under load.