M8-1.25 x 20mm 소켓 캡 나사 | 육각 소켓 드라이브 | 풀 나사산 | 클래스 8.8 합금강 아연 도금 (300개/팩)

Threads are clean and the hex socket bites perfectly with a 5mm Allen key, so they drive in without any wobble. I’ve used about half the box for jig fixtures and not a single one has stripped or shown rust yet.

The zinc plating on these screws seems heavier than standard, which makes them slide into threaded holes without binding. Used them for a jig I'm building and all 300 are perfectly consistent in thread pitch.

The hex socket drive on these M8 screws fits my driver bits perfectly, making assembly of a custom jig much smoother than with the cheaper bolts I've tried. They're fully threaded and the zinc plating looks consistent across the whole bag, which is great for tooling projects.