Spax Universal Flat Zinc Yellox Countersink Pozi Screw 3.5 x 50mm (200 Pack)

Multi Purpose Screws for wood, chipboard, plastic and thin sheet material. Multi head countersinks and firm grip, no splitting and no pilot hole required. Installing window and door frames with plastic and aluminium profiles calls for a head shape that can withstand high pulling forces whilst not being too thick. Our flat countersunk head ticks both boxes. Unlike the partial thread, the full thread spans the entire screw length. The more thread turn a screw has, the greater the tensile and compressive forces that can be transferred by these screws to the wood. Our full-thread screws are predominantly used for heavy-duty wood connections.