350 x TIMCO Twin-Threaded Countersunk Silver Woodscrews - 8 x 11/2

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A traditional twin-thread woodscrew with single lead start for a fast installation. Mainly used in soft timber applications or masonry with a plastic plug. NOTE: Partially threaded . Double countersunk head reduces the likelihood of head shear and assists completion of countersinking Partially threaded from 1 1/4 and above Made from C10-18 steel to ensure consistent quality 60 twin-threads with parallel shank for faster insertion and greater pull-out resistance Surface hardened up to 750 HV to prevent torque shearing under load and a core hardness of up to 450 HV for improved ductility 25 sharp point and single lead for a fast start and improved thread acceptance Download 1 Show more