With these Spax universal screws, you assemble furniture, hardware, and sheet materials with precision and total control. The t-star plus T20 drive ensures optimal torque transmission, preventing bit slippage and cam-out during rapid driving. Thanks to the countersunk multi head, each screw sinks cleanly and sits perfectly flush with the wood surface without tearing the material. The 4.5 x 20 mm full thread design provides exceptional holding power and high tensile strength in thin boards such as chipboard and MDF. Finished with an advanced wirox coating, this steel screw delivers dependable corrosion protection across all your interior joinery projects.