Press Inserts are designed for use in thermoset plastics. The
diamond-knurled OD allows for "cold" installation while providing
optimum pull out resistance. For maximum pull out resistance, consider
the reverse headed Press Inserts.
Ultrasonic Inserts are designed for use in thermoplastics. Installed
with either an ultrasonic horn or a heat driver, these inserts feature
knurl patterns designed for optimum torque and pull out resistance.