Wiha Micro Flat Screwdriver Bit 28 mm 4.0 mm Form 4 mm

The Wiha Micro Flat Screwdriver Bit is a precision fastening tool engineered for delicate assembly work, electronics repair, and professional technical tasks. Measuring 28 mm in total length with a 4.0 mm flat tip size, this micro bit is built to deliver accurate torque and reliable performance in tight spaces where standard tools cannot reach. It features a 4 mm drive form that ensures seamless compatibility with standard micro bit holders. Manufactured by Wiha, this component is designed to meet the rigorous demands of professional and industrial use.

Advantages

This micro flat screwdriver bit offers exceptional precision for intricate tasks, allowing technicians and hobbyists to work on small components without risking damage to surrounding areas. The compact 28 mm length provides excellent control and visibility during operation. Constructed from high-grade durable material, the bit maintains its structural integrity and tip shape even under regular professional use. Its standardized 4 mm drive form ensures quick and secure attachment to compatible micro bit holders for efficient workflow.

Suitable for

• Electronics repair and maintenance
• Precision mechanical assembly
• Model making and hobby crafts
• Working with miniature flat-head fasteners

When it may not be suitable

This screwdriver bit is not designed for heavy-duty construction tasks, high-torque automotive applications, or driving large fasteners into dense materials. Using this micro tool for purposes outside of precision electronics and delicate assembly may result in premature wear or damage to the tip.

Key specifications

• Bit type: Flat / Slotted
• Tip size: 4.0 mm
• Total length: 28 mm
• Drive form: 4 mm
• Compatibility: Micro bit holders

How to use

Insert the 4 mm drive end of the screwdriver bit securely into a compatible micro bit holder. Align the 4.0 mm flat tip carefully with the slot of the target fastener to ensure full engagement. Apply steady, controlled downward pressure while turning the tool to tighten or loosen the screw. Avoid applying excessive side-load pressure or using power tools at high speeds, as this tool is intended for manual precision work.

What to consider before purchase

• Verify that your existing tool handle or bit holder is compatible with a 4 mm drive form.
• Check the fastener head dimensions to ensure the 4.0 mm flat tip matches your specific application requirements.
• Assess whether the 28 mm length is adequate for reaching recessed fasteners in your equipment.

Usage recommendations: Store the micro flat screwdriver bit in a dry, clean environment to prevent corrosion. Regularly inspect the tip for signs of wear to ensure optimal fastener engagement and prevent slipping during delicate operations.