Screwdriver Bit Wera 851/4 Z

Wera 851/4 Z screwdriver bit is a high-quality Phillips (PH 3) bit with a 70 mm working length and a 1/4" (6.3 mm) hex shank compatible with holders to DIN ISO 1173-F 6,3. The bit is manufactured for increased toughness and durability to withstand frequent use while ensuring accurate screw engagement and efficient torque transfer.

Advantages

The bit combines hardened material with precise machining to provide wear resistance and a secure fit in Phillips screws. Its 1/4" hex shank ensures compatibility with standard bit holders and quick-change chucks, while the 70 mm length gives better reach in recessed or hard-to-access screws.

Suitable for (tasks / use cases)

• Installing and removing Phillips PH 3 screws
• Assembly and maintenance work in mechanical and electrical applications
• DIY projects requiring a durable Phillips bit with extended reach

Key specifications

• Brand: Wera
• Model: 851/4 Z
• Tip type: Phillips PH 3
• Length: 70 mm
• Shank: 1/4" (6.3 mm) hex, DIN ISO 1173-F 6,3 compatible
• MPN: 05 059790 001
• EAN: 2050000317217

How to use

Insert the 1/4" hex shank into a compatible bit holder, screwdriver handle, or quick-change chuck. Align the Phillips tip with the screw head and apply steady pressure while turning to avoid cam-out. Use appropriate torque settings on powered drivers and stop if excessive resistance or bit damage is detected.

Recommendations

Store the bit dry and clean; inspect tips before use and replace if visibly worn or rounded. Match the PH 3 tip to the correct screw size and avoid excessive torque to prolong bit life.