Brass Ultrasonic Inserts are precision-engineered components used for creating strong, reusable metal threads in thermoplastic components. These inserts are installed using ultrasonic or heat staking methods, making them ideal for a wide range of plastic assembly applications across the automotive, electronics, telecommunication, appliance, and medical industries. We manufacture and export custom brass ultrasonic inserts in M3, M4, M5, M6, M8, M10, and M12 thread sizes, available with or without collars and in multiple knurling styles for enhanced grip and torque resistance.