Keep your SCT indexable boring bars running smoothly with our full line of genuine accessories. We offer precision-fit insert screws and flag-style Torx® keys specifically designed for triangle and diamond-shaped inserts. All 3/16", 1/4", and 5/16" right- and left-hand bars use AT6+ screws and AT6+ flag keys. Larger 3/8" and 1/2" bars use AT8+ screws and AT8+ flag keys. Using the correct screws and keys ensures proper insert seating, consistent torque, and reduced risk of damage to your tooling. For long-term performance and secure insert retention, always pair your boring bars with SCT-recommended accessories.