S-440-0-ZI | صواميل PEM ذاتية التثبيت #4-40 | فولاذ مطلي بالزنك (90/عبوة)

The zinc plating on these nuts is holding up perfectly in a slightly damp environment, no rust after a month. They’re a solid choice for #4-40 fastening, and the 90-pack covers multiple projects without running out.

I needed some #4-40 self-clinching nuts for a project, and these steel ones with the zinc plating fit perfectly without any stripping. The 90-count package is generous for the price, so I’ve got plenty left over for future work.

The zinc plating is holding up nicely so far, no corrosion after a week of light assembly work. These clinch nuts press into the sheet metal cleanly and don't spin when you torque a screw into them.