With the Spax chipboard screw 3.5 x 20 mm, you can create strong, reliable joints in wood and board materials quickly and effortlessly. The countersunk multi-head sinks smoothly and flush into the timber surface without splitting, ensuring a clean and splinter-free finish on cabinet making and interior finishing projects. Thanks to the full-thread design, you achieve maximum pull-out resistance and a firm grip in thin timber panels, MDF, or chipboard. The dependable PZ2 drive prevents your bit from slipping out for smooth, controlled fastening, while the Wirox coating provides enhanced corrosion protection for indoor applications.