Ruuvauskärki Wera 851/9 C J

The Wera 851/9 C J screwdriver bit is a high-quality Phillips PH 0 bit with a 4 mm halfmoon drive and a length of 64 mm. It is optimised for Japanese PH screws and features a hard design that provides precision and long-term durability for professional and hobby use.

Advantages

This bit offers a precise fit for Phillips PH 0 screws, improved stability thanks to the 4 mm halfmoon drive, and a hardened construction that resists wear. Its 64 mm length provides better access in recessed or confined screw locations while maintaining reliable torque transfer.

Suitable for

• Working with Japanese-standard Phillips (PH) screws
• Electronics assembly and small appliance repair
• Precision mechanical and hobby tasks

Key specifications

• Brand: Wera
• Model: 851/9 C J
• Type: Phillips PH 0 screwdriver bit
• Drive: 4 mm halfmoon
• Length: 64 mm
• Design: hardened (hard design)
• MPN: 05135273001
• EAN: 2050001683908

How to use

Insert the 4 mm halfmoon drive into a compatible bit holder or screwdriver handle, select the PH 0 bit end for the screw head, and apply steady pressure while turning to avoid cam-out. Use the 64 mm length to reach screws in recessed areas, keeping the bit aligned with the screw to ensure correct engagement.

Recommendations

Use the bit with appropriate torque settings and a matching bit holder to prevent damage to the screw head. Inspect the bit regularly for wear and replace it if the tip shows rounding or deformation.