Create permanent, corrosion-resistant threads in sheet metal without the setup and mess of weld nuts. Made of 18-8 stainless steel, these press-fit nuts withstand water and mild chemicals better than zinc-plated steel nuts. Also known as clinch-style captive nuts, press them into a drilled or punched hole with an arbor press or similar pressure tool. The pressure forms your sheet metal into the knurls of the nut, making the nut inseparable from the sheet. Installation requires access to both sides of the panel.