M4-0.7 X 25mm 六角頭螺絲 | 8.8級鋼鍍鋅 | 全螺紋 (500入/包)

Threads are clean and cut perfectly from the first one to the last, and the zinc coating looks even across all 500. I’ve used about a third of them on a machine frame and every single one seated without a hitch, so for the price these are just about flawless.

These arrived in a sturdy little box, and the zinc plating looks clean and even across all 500 pieces. I've used about a hundred so far for jig assembly and the hex sockets haven't stripped once, which is a good sign for the class 8.8 steel.

I bought these for a small assembly project and the 25mm length was exactly what I needed. The zinc plating looks solid and the threads are clean all the way through.