M10-1.5 x 45mm 內六角螺絲 | 六角驅動 | 部分螺紋 | 12.9級合金鋼鍍鋅 (50個/包)

These arrived well-packaged and the zinc plating is even and smooth, no rough edges in the threads. I’ve torqued them into a steel fixture at spec and the 12.9 hardness feels properly rigid, no stripping so far.

The hex socket drive on these M10 screws gave me a solid grip without any cam-out, and the partially threaded design made alignment in my tooling fixture much easier. I've already ordered another pack for the next project.

The threaded section seats perfectly in my jig, and the hex socket drives cleanly without any rounding. The zinc plating looks uniform across all fifty pieces, so I've got a solid batch for the rest of my tooling projects.