Screwdriver Bit Set Wera 840/4 IMP DC Hex-Plus DIY 5 pcs

Wera 840/4 IMP DC Hex-Plus DIY 5 pcs is a set of five 6 mm hex screwdriver bits, each 50 mm long, with a 1/4" hexagonal shank designed for secure fitting in standard bit holders (DIN ISO 1173-F 6.3). Manufactured in the Czech Republic, the bits combine Impaktor technology and Hex-Plus geometry to increase service life, reduce screw head damage and improve torque transfer for DIY and workshop tasks.

Advantages

The Impaktor technology provides enhanced durability under extreme load by absorbing impact stresses. A rough diamond-particle coating on the bit tip increases frictional resistance to prevent cam‑out. Hex‑Plus geometry enlarges the contact surfaces inside the screw head, minimising the notch effect and reducing the risk of screw destruction. The 1/4" hex shank ensures compatibility with common bit holders.

Suitable for

• General DIY projects and household repairs
• Assembly and disassembly of furniture and fixtures
• Workshop use where higher torque and impact resistance are required
• Tasks requiring precise hexagonal screw engagement (6 mm)

Key specifications

• Brand: Wera
• Model: 840/4 IMP DC Hex-Plus DIY
• Contents: 5 pcs, hex bits 6 mm
• Bit length: 50 mm
• Shank: 1/4" hex (DIN ISO 1173-F 6.3)
• Technologies: Impaktor, Hex-Plus, diamond-particle coated tip
• Origin: Czech Republic
• MPN: 05057646001
• EAN: 2050001223784

How to use

Insert the 1/4" hex shank into a compatible bit holder or screwdriver. Select the 6 mm hex bit and engage it fully with the screw head before applying torque. For impact drivers or high-torque applications, confirm secure seating and use controlled impacts. After use, inspect the bit tip for wear and store the set in a dry place.

Recommendations

Use the bits with holders conforming to DIN ISO 1173-F 6.3 and avoid excessive side loads. Replace bits if the diamond-particle coating is worn or if noticeable rounding of the screw head occurs to maintain performance and prevent screw damage.