Screwdriver Bit Torx T25 Wera 867/1 BDC SB, diamond-coated, alloy tool steel, diameter 6.3 mm, 1 pc

Wera 867/1 BDC Torx T25 bit is a single-piece, diamond-coated screwdriver bit made of alloy tool steel with a 6.3 mm (1/4") shank that fits standard bit holders and quick-change chucks. The BiTorsion design integrates a softer torsion zone that reduces shaft hardness by about 20% compared to the drive tip, limiting tip deformation under load peaks and extending the bit's service life. The diamond coating increases grip in the screw head and reduces cam‑out for more secure engagement during machine or manual fastening.

Advantages

The BiTorsion torsion zone reduces stress peaks that commonly cause premature wear of bits or damage to screw heads, resulting in longer tool life and improved productivity in repetitive or machine-driven fastening. The diamond-coated surface provides enhanced slip resistance by allowing microscopic diamond particles to bite into the screw without damaging it, reducing cam‑out. The 6.3 mm shank is compatible with standard holders, making the bit suitable for a wide range of screwdrivers and cordless tools.

Suitable for

• Precision assembly and electronics where secure engagement is required
• Maintenance and repair tasks with repetitive fastening
• Machine-driven or high-speed screwdriving applications
• Situations where reduced cam‑out and longer bit life are important

Key specifications

• Model: Wera 867/1 BDC
• Type: TORX® bit T25
• Length: 25 mm
• Shank diameter: 6.3 mm (1/4")
• Coating: diamond-coated
• Material: alloy tool steel
• Package quantity: 1 piece
• MPN: 05134377001
• EAN: 4013288099808

How to use

Insert the 6.3 mm shank into a compatible bit holder or quick-change chuck and engage the Torx T25 tip fully into the screw head. Apply steady axial pressure and drive at an appropriate speed for the screw and material. The BiTorsion zone will absorb torque peaks; avoid excessive lateral forces to prevent damage to the screw or bit. For machine fastening, set torque limits according to the fastener manufacturer's recommendations.

Usage recommendations

Use the bit for tasks requiring reliable engagement and reduced cam‑out; replace the bit when visible wear appears on the tip to maintain optimal performance and prevent screw damage.