With the Spax 4 x 20 mm chipboard screw, you achieve strong and neat timber joints with total confidence. The PZ2 drive guarantees optimal torque transfer and prevents bit slippage during driving. Featuring a countersunk multi-head, it sinks smoothly flush into wood for a splinter-free finish and sits flat against metal hardware. The full-thread design provides maximum holding power, making it ideal for assembling furniture fittings, hinges, and thin panels like mdf or chipboard without pre-drilling in softwood. In addition, the advanced Wirox coating delivers significantly higher corrosion protection than standard zinc plating, ensuring long-lasting, reliable assemblies.