With the Spax chipboard screw, you create tight and dependable timber joints without pre-drilling in softwoods or composite boards. The countersunk multi head seats flush into the material for a smooth, split-free finish while stopping on metal to protect brackets and fittings. Featuring a 4.5 x 35 mm size with a full thread profile, it delivers high pull-out resistance and reliable holding power in mdf, particle board, and interior cabinetry. The Pozidriv PZ2 cross recess provides positive bit engagement during driving, and the durable Wirox coating shields the steel core from corrosion throughout all your indoor woodwork.