M3-0.5 x 35mm 內六角螺絲 | 平頭內六角驅動 | 半牙 | 等級10.9 合金鋼鍍鋅 (600顆/包)

The zinc plating is holding up nicely on these, and the partially threaded design gives the grip I need for jig assemblies. 600 in the bag means I won’t be running out mid-project, which is exactly what I was hoping for.

The hex socket drive seated my driver bit cleanly on every single one of the 600, and I didn't strip a single head during assembly. The zinc plating gives them a consistent finish that's held up well in my tooling fixtures.

Used a full pack on a custom jig build — the hex socket drive made installation a breeze and the zinc plating held up perfectly. These class 10.9 screws feel solid and precise for any machinery project.