Torx Drive: Torx drive lag screw bolt uses T30 star bit, taking high pressure torque without stripping. Large wide truss head or washer head won't over countersink into the material. Rust Resistant: Our heavy duty lag screws are made from carbon steel and epoxy exterior black coating, with high hardness and great corrosion resistance, passed 2000h salt spray test, withstand the weather for outdoor use.
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