Screwdriver bit Wiha 7013 Z

The Wiha 7013 Z screwdriver bit is a robust and precise hex bit (SW 4.0) 25 mm long, designed for general fastening tasks in trade and industry. Manufactured to fit standard 6.3 mm (1/4") drive tools, this 4 mm hex bit offers a secure fit and consistent torque transfer while remaining lightweight at approximately 5.3 g.

Advantages

Robust construction and precise machining provide reliable performance for repetitive fastening operations. Contrasting laser marking allows simple and quick recognition of the profile size. The bit conforms to DIN 3126 / ISO 1173 style C, ensuring compatibility with common bit holders and screwdrivers.

Suitable for

Key specifications

How to use

Insert the Wiha 7013 Z bit into a compatible 6.3 mm (1/4") drive holder or screwdriver until it seats securely. Select the appropriate 4 mm hex screw and engage the bit with the screw head. Apply steady torque while maintaining axial alignment to avoid cam‑out or damage to the screw head. After use, store the bit in a suitable bit holder or case to protect the tip and marking.

Recommendations

For best results, use the bit within the intended torque range for 4 mm hex fasteners and avoid impact drivers unless the bit is specified for such use; regular inspection for wear and replacement when tip deformation appears will maintain safe and efficient operation.