A push nut is a specialized fastener designed to securely hold components in place on shafts, tubes, and studs. Its distinctive feature is a set of internal gripping teeth or serrations that bite into the shaft material when pressed on, creating a robust and reliable connection.

These fasteners are particularly valued in manufacturing for their cost-effectiveness and quick installation process. Once installed, push nuts provide permanent retention as they cannot be removed without damaging the fastener itself, making them ideal for applications requiring tamper-resistant solutions.