With Spax 4 x 70 mm chipboard screws, you assemble timber frames, floor panels, and bespoke furniture with ease and precision. The t-star plus T20 drive ensures a secure bit fit and eliminates slipping or cam-out during high-torque driving. Featuring a 37 mm partial thread, each screw pulls the top wooden component tightly against the base structure for a gap-free, solid joint. The countersunk multi-head sinks smoothly flush into the timber surface without tearing fibers or damaging the wood. In addition, the galvanized wirox coating delivers enhanced corrosion resistance for interior joinery and protected outdoor applications.