Press-in inserts are brass inserts that embed into a pre-molded or pre-drilled hole in a thermoplastic part using axial press force alone — no heat, no ultrasonic equipment required. The insert's external geometry locks against the host plastic as it is pressed in, providing a reusable internal thread.

Prime press-in inserts are engineered for very low screw installation torque with self-locking action, suiting high-volume thermoplastic assembly lines.