M6-1 X 18mm 內六角螺絲 | 內六角驅動 | 全牙 | Class 8.8 合金鋼鍍鋅 (600入/包)

Installed a few hundred of these in a jig assembly today—the hex socket drive held up perfectly without any stripping. The zinc plating gives them a clean, uniform look and they thread smoothly into pre-tapped holes. Exactly what I needed for precision work.

I’ve been using these for mounting brackets on a custom jig and they thread in cleanly without any binding. The zinc plating seems to be holding up well even with some occasional oil contact in my shop.

The hex socket drive on these M6 screws makes assembly much easier than dealing with a stripped Phillips head. They're fully threaded, which worked great for my jig where I needed consistent grip along the entire shank.