Often used in low-clearance areas, these press-fit nuts have a flat hex head that sits flush with the surface of your material once they’re installed. Made from 400-series stainless steel, they add stronger threads to sheet metal than zinc-plated steel or 18-8 stainless steel nuts. However, they’re not as corrosion resistant as 18-8 stainless steel. Use them to add permanent threads to sheet metal like weld nuts but without the setup and mess. 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 makes your sheet metal and the nut inseparable—the hex head sits flush with the sheet metal, which melds into the grooves of the nut. Installation requires access to both sides of the panel.

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