M1.6-0.35 x 3mm 內六角螺絲 | 六角驅動 | 全螺紋 | 合金鋼 12.9 級鍍鋅 (600 / 包)

Installing these into a tiny jig for watch components was worry-free since they threaded in cleanly and held tight right away. The 600-count pack means I’ll have spares for future projects, and the zinc coating looks uniform across all of them.

I needed something strong for a small jig I was building, and these little screws are exactly what I was looking for. The Class 12.9 alloy steel feels much tougher than the usual hardware store stuff, and the zinc plating should help resist rust in my workshop.

The hex socket drive fits my tiny Allen wrench perfectly, and the zinc plating looks clean and even across all 600 pieces. These little screws are ideal for a precision fixture I’m working on, and they thread smoothly into a tapped hole without binding.