Wiha 40659 Hexagon Screwdriver Bit 30 mm

The Wiha 40659 Hexagon Screwdriver Bit 30 mm is a professional precision tool engineered for reliable torque transmission and secure fastener engagement. Designed specifically for working with particularly small screws, this high-grade accessory ensures dependable performance in various mechanical, electronic, and industrial repair or assembly tasks. Built to meet stringent industry standards, it offers durability and precise fit for demanding daily use.

Advantages

This precision screwdriver bit is manufactured from high-grade chrome-vanadium steel that has been through-hardened to withstand continuous professional workloads. The robust metallurgical composition minimizes wear and deformation, ensuring a long service life and consistent torque transfer without damaging fastener heads. Its standardized geometry allows for seamless compatibility with appropriate bit holders and drives, reducing downtime and improving workflow efficiency in precision applications.

Suitable for

• Assembly and repair of small electronics and precision instruments
• Delicate mechanical engineering tasks involving tiny hexagon socket screws
• Professional maintenance work in industrial and workshop environments
• Precision device assembly requiring controlled torque application

When it may not be suitable

This product is not designed for heavy-duty construction work, high-torque automotive applications, or driving large fasteners. Using this 30 mm bit with oversized screws or incompatible drive systems may result in tool slippage, fastener damage, or premature wear of the component.

Key specifications

• Tip profile: Hexagon socket
• Hexagon size: 4 mm
• Length: 30 mm
• Product dimensions: 30 x 7 x 7 mm
• Weight: 4 g
• Material: High-grade chrome-vanadium steel, through hardened
• Drive standards: DIN 3126, ISO 1173, Style C4

How to use

Insert the screwdriver bit securely into a compatible bit holder or hand tool designed for Style C4 drives. Ensure the hexagon tip is fully and correctly seated in the fastener head before applying rotational force to prevent cam-out or stripping. Apply steady, even axial pressure while turning the tool to achieve optimal torque transfer and secure fastening results.

What to consider before purchase

• Verify that the 4 mm hexagon socket size matches your specific fasteners
• Ensure compatibility with your existing screwdriving tools and bit holders designed for 30 mm bits conforming to DIN 3126 and ISO 1173 standards
• Assess the intended application to confirm it involves small screws rather than high-torque tasks

Always inspect the bit for signs of wear or damage prior to use, and wear appropriate personal protective equipment when performing mechanical assembly or repair work.