No4 x 1 POZI CSK ZINC TWIN THREADED (Box of 200)

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.

PRODUCT DETAILS

•  Double countersunk head reduces the likelihood of head shear and assists completion of countersinking 

•  Partially threaded from 1 1/4 ” and above • Zinc plating 3-5 microns

• Zinc plating 3-5 microns

• 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