The Centurion 3.5mm x 30mm Stainless Steel Chipboard Screws feature a twin thread design for superior holding power and easier insertion. These versatile screws are ideal for multiple substrates including softwoods, hardwoods, chipboards and fibreboards. With their corrosion-resistant stainless steel construction, they’re particularly well-suited for marine, coastal and sanitaryware applications. The countersunk head design ensures a flush finish, while the deep insert bit recess enables more positive driving force.