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Screw Features & Special Properties
Special properties
    A. Wide overlying Washer head
    B. WIROX P3J: The surface with extremely high protection against corrosion
    C. 4CUT (For screw lengths of 160 mm and larger): significantly reduces the screwing in torque
    D. Partial thread: firm tightening of the upper wood layer
    E. T-STAR plus: secure bit grip, no cam-out effect, optimal force transmission
    1. 4CUT: allows screwing in without pre-drilling (wood-dependent), reduces splitting as square end displaces the fibres
    2. Ground serrations: up to the point – quick and secure fastening