Self‑countersinking Torx wood screws, 4 mm diameter and 30 mm length, feature a flat head for flush installation and full thread for strong pull‑out grip in timber or paneling. The galvanized steel shaft resists corrosion while the T‑STAR Plus T20 drive ensures quick, slip‑free tightening with any Torx bit. Pack of 200 delivers reliable performance for carpentry, furniture assembly, or DIY projects.