Wera screwdriver bit 3 mm flat 50 mm, 1/4" hex shank (Wera 800/4 Z bits)

Wera screwdriver bit 3 mm flat 50 mm with a 1/4" hex shank is a single precision bit engineered for slotted (flathead) fasteners. The 50 mm length provides reach for recessed screws while the compact 3 mm flat tip fits common small-to-medium slot heads. The 1/4" hexagonal shank is compatible with standard bit holders, hand drivers and power tools that accept 1/4" bits, enabling quick changes and secure seating during use. This lightweight bit is intended for general-purpose fastening and light maintenance tasks where a durable, reliable slotted tip is required.

Advantages

The bit is made to Wera’s quality standards for toughness and wear resistance, giving consistent engagement with slotted screws and reduced cam-out. Its 1/4" hex shank conforms to widely used holder interfaces for stable coupling and easy interchangeability. The 50 mm overall length balances access and control, allowing work in shallow recesses without sacrificing driver stability. At approximately 7 g, the bit adds minimal weight when carried in a set or mounted in a holder.

Suitable for

• General fastening of slotted screws in furniture, fittings and enclosures
• Light maintenance and repair tasks on appliances and small machinery
• Use with magnetic or quick-change bit holders and manual or powered drivers
• Situations requiring a compact bit for limited-access screw heads

Key specifications

• Tip type: 3 mm flat (slotted)
• Overall length: 50 mm
• Shank: 1/4" hexagonal
• Weight: approx. 7 g
• Compatibility: designed for use with 1/4" bit holders and drivers

How to use

Insert the 1/4" hex shank into a compatible bit holder, manual driver or power tool chuck designed for 1/4" bits. Position the 3 mm flat tip squarely in the slotted screw head to maximise contact and minimise slipping. Apply steady axial pressure and rotate at a controlled speed; when using power drivers, use lower torque and rpm settings for small or soft screws to avoid damage. After use, remove the bit from the holder and store in a bit tray or case to protect the tip from deformation.

Usage recommendations

For best results, match the 3 mm flat tip precisely to the screw slot width and keep the tip clean of debris. Use with a magnetic or locking bit holder to improve retention and reduce the risk of cam-out. Inspect the tip before delicate jobs; replace the bit if the flat edge shows rounding or wear.