Screwdriver Bit Wera 851/9 C PH 0 — Tool Steel Hard, 1 pc

Wera 851/9 C PH 0 screwdriver bit is a single Pozidriv PH 0 tip machined from hard tool steel for precise engagement with PH 0 fasteners. Designed to be used with compatible bit holders, magnetic adaptors and interchangeable-handle screwdrivers, this compact bit serves tasks that require small, accurate drivers such as electronics assembly, appliance repair and light maintenance. The solid construction focuses on tip retention and wear resistance while keeping a form factor convenient for pocket or tool kit storage.

Advantages

The hard tool steel construction delivers increased tip strength and improved resistance to deformation under torque. A precisely formed PH 0 geometry ensures consistent engagement with Pozidriv screws, reducing cam-out and minimizing damage to screw heads. The single-piece design is compact and easy to swap in standard bit holders; its dimensional accuracy supports repeatable performance in precision tasks. Compatibility with common bit holders and compact storage make it practical for both professional and hobby use.

Suitable for

• Electronics assembly and repair
• Small appliance maintenance
• Precision fastening in hobby and model work
• General light-duty maintenance where PH 0 Pozidriv screws are used

Key specifications

• Tip type: Pozidriv PH 0
• Material: hard tool steel
• Quantity: 1 piece
• Length: compact bit length suitable for standard bit holders (fits 1/4" hex sockets)
• Finish: machined tip geometry for accurate engagement

How to use

Insert the Wera 851/9 C PH 0 bit into a compatible 1/4" hex bit holder, magnetic adaptor or multi-bit screwdriver until it seats securely. Align the Pozidriv tip with the screw head and apply steady axial pressure while turning to avoid slipping. For precision electronics, work with controlled torque and, where available, use a torque-limiting driver to prevent overtightening. After use, store the bit in a bit case or holder to protect the tip profile.

Recommendations

Use the PH 0 bit only on Pozidriv PH 0 screws to preserve tip geometry. Avoid excessive torque beyond the rating of the bit or fastener; for repetitive high-torque tasks select a bit specifically rated for impact or high-torque use. Keep the tip clean of debris and inspect periodically for wear; replace the bit when tip rounding or damage is visible to maintain safe and accurate fastening.