Screwdriver bit Wera 05056320001 — Hex (metric) 4 mm, 25 mm length, 1 pc, 1/4" (25.4/4 mm) hex shank

Single Wera screwdriver bit 05056320001 with a metric Hex 4 mm tip and 25 mm overall length. The bit is designed to fit standard 1/4" (6.35 mm) hex bit holders and manual or powered drivers. It is intended for driving and removing hexagon socket fasteners in assembly, maintenance and repair operations where a compact bit is required to reach confined spaces or work with bit holders and electric screwdrivers.

Advantages

The bit is made from a tough, ductile material that resists wear and deformation during repeated use. Wera’s Hex-Plus geometry increases contact surface with the screw head, reducing the notching effect and minimising damage to socket head screws. Its standardized 1/4" hex shank ensures compatibility with a wide range of holders, handles and power tools that accept DIN ISO 1173-D 6.3 style bits.

Suitable for

• Driving and removing metric hexagon socket screws in machinery and equipment
• Maintenance and repair tasks in workshops, garages and production lines
• Assembly operations where compact 25 mm bit length is required to access tight or recessed fasteners
• Use with bit holders, manual screwdrivers and electric screwdrivers that accept 1/4" hex bits

Key specifications

• Tip type: Hex (metric) 4 mm
• Overall length: 25 mm
• Shank format: 1/4" hex
• Geometry: Hex-Plus for increased contact area with screw head
• Material characteristics: tough, ductile bit steel for improved wear resistance
• Quantity: 1 piece

How to use

Insert the 1/4" hex shank into a compatible bit holder, handle or power driver until it seats firmly. Align the hex tip with the socket of the fastener and apply steady axial pressure while turning to drive or remove the screw. For power drivers, select appropriate torque settings to avoid over-tightening or stripping; for manual use, ensure firm, consistent rotation. Replace the bit if you observe significant wear or deformation of the tip.

Usage recommendations

Use the bit with the correct 4 mm hex socket size and avoid excessive side-loading. For best results, match the driver torque to the fastener material, and store the bit dry to prevent corrosion.