The Small Flange sits nearly flush with the surface after installation.

The Knurled Body grips the material to prevent spin-out and the Small Flange sits nearly flush when installed.

The Large Flange is stonger for heavy duty applications and the Knurled Body grips the material to prevent spin-out.

Hex Rivet Nuts are for heavy duty applications with hexagonal holes.

Aluminum Hex Rivet Nuts are for heavy duty applications with hexagonal holes and are more corrosion resistant than steel.