The Traxxas 5145 Screw Pins 4x15 mm (6‑pack) are genuine Traxxas replacement hardware designed for use in a variety of Traxxas RC vehicles. These metal screw pins help secure components such as drive cups, suspension linkages, and other driveline/steering parts that rely on M4‑diameter pin screws. They’re essential small hardware pieces that keep your model running reliably after maintenance, repairs, or rebuilds.