Screwdriver Bit Wera 3851/1 TS PH1 × 25 mm Stainless Steel

Screwdriver Bit Wera 3851/1 TS PH 1 x 25 mm in stainless steel is a single Phillips (PH1) replacement bit designed for manual or powered screwdrivers. Manufactured by Wera and identified by MPN 05071010001 and EAN 2050000432538, this bit provides a precision-formed tip and a 6.3 mm hex shank for secure fitting in bit holders and quick-change chucks.

Advantages

The Wera 3851/1 TS PH 1 bit features corrosion-resistant stainless steel construction and a precisely machined Phillips profile for reliable engagement with PH1 screws. Its D 6.3 (6.3 mm) hex shank ensures stable seating in standard bit holders and reduces cam-out during use. Supplied as a single-piece unit, it is compact and suitable for both workshop and site use.

Suitable for (tasks / use cases)

• Driving and removing PH1 size screws in electronics and appliances
• Assembly and maintenance tasks requiring a PH1 bit
• Use with manual bit holders, ratchets, and powered screwdrivers with 6.3 mm hex chuck

Key specifications

• Brand: Wera
• Model / MPN: 3851/1 TS PH 1 x 25 mm (05071010001)
• Tip type: Phillips PH1
• Length: 25 mm
• Material: Stainless steel
• Shank diameter: 6.3 mm (D 6.3 hex)
• Quantity: 1 piece
• EAN: 2050000432538

How to use

Insert the Wera PH1 bit into a compatible 6.3 mm hex bit holder, quick-change chuck or screwdriver. Make sure the bit is fully seated to ensure correct alignment with the screw head. Apply steady pressure and rotate the driver; for powered tools use a suitable torque setting to avoid damage to the screw or workpiece. After use, store the bit in a bit holder or toolbox to protect the tip.

Recommendations

Use the bit with the correct PH1 screw size and avoid excessive torque to prolong tip life; stainless steel offers corrosion resistance but avoid use in environments with strong corrosive chemicals.