Hillman 1-4 In. x 2-3-4 In. Slotted Hex Washer Tapper Concrete Screw (12 Ct.) 41562 766410

Designed to fasten objects into concrete brick and block. Specially hardened high-low thread actually cuts thread into masonry materials. A simple 2-step operation drill then drive. Tappers may be removed and re-inserted in the same hole. Use for window installations interior hand rails metal door frames storm shutters interior lighting fixtures thresholds or screened enclosures. Clamshell packaging.Thread Diameter: 1/4 In.Length: 2-3/4 In.Head Type: Slotted Hex WasherMaterial: SteelFinish: Corrossion- Blue Climaseal