UN Blind hole flat head hexagon riveted nut

Most UN blind hole flat head hexagon riveted nuts are made from austenitic stainless steels. Grade A2 (304) is great for general rust resistance. Grade A4 (316) has molybdenum, which makes it way better at fighting pitting and crevice corrosion,especially in salty or chemical environments. That’s why A4 is the go-to for these riveted nuts in marine or chemical setups.

Both A2 and A4 grades make sure the riveted nuts are strong enough and can be formed properly during the riveting process.

How to install?

To install the UN blind hole flat head hexagon riveted nut, you need a special rivet nut tool. First, drill a hole in the material that’s the right size. Pop the riveted nut into the hole, then the tool’s mandrel grabs the hex head. When you apply pressure, the mandrel pulls inward, making the rivet barrel expand outward against the backside of the material,it forms a solid bulge. At the same time, the flat head gets pulled down flush into the countersink.

This cold-forming process creates a permanent, strong connection. And because it has a blind hole, the internal threads don’t get damaged during installation.

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What material thickness range can be accommodated?

The material thickness that works with a specific UN blind hole flat head hexagon riveted nut depends on its size,like M4, M5, or M6. Usually, these nuts are made for sheet metal or panels that are roughly 0.5mm to 6mm thick. It’s important to pick the right nut size based on how thick the material is that you need to grip. When you rivet the nut in place, it clamps the material tightly as long as you stay within its recommended thickness range.