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wera_05057644001
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wera_05057644001
wera_05057644001
wera_05057644001
wera_05057644001
wera_05057644001
wera_05057644001
wera_05057644001
wera_05057644001
wera_05057644001
wera_05057644001
wera_05057644001
wera_05057644001
wera_05057644001

WERA 840/4 IMP DC Hex-Plus DIY bit, 4 x 50 mm - 05057644001

Supplier number: WERA 05057644001 | EAN 4013288157577
11.22 tax incl.
€9.28 excl. VAT (incl. all environmental contributions)
On order: delivered from 20/10/2026

The minimum purchase order quantity for the product is 5.

  • Ordered before 20:00 - delivered as of 20/10/2026
  • Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
  • Delivery by DHL
  • Delivered from Belgium

Extreme durability by Wera

Practical benefits
  • Prevents screw head rounding: The Hex-Plus profile maximizes the contact surface so you protect hexagonal screw heads from damage.
  • Secure grip prevents cam-out: Tiny diamond particles bite directly into the screw head, keeping you safely locked in place.
  • Built for impact drivers: The Impaktor torsion zone absorbs extreme peak forces, delivering an extended service life during heavy fastening.

In a nutshell

The right choise for

Tackle demanding fastening jobs with complete confidence using the Wera 840/4 imp DC Impaktor hexagon bits. Engineered specifically for use with impact drivers, this 5-piece pack of 50 mm long 4 mm hex bits easily absorbs extreme peak torque loads. The smart Hex-Plus geometry provides a larger contact area in the screw head, effectively preventing the rounding and stripping of socket head screws. At the tip, tiny diamond particles bite directly into the screw recess to eliminate cam-out and slipping. Equipped with a standard 1/4" hexagon drive, these bits give you lasting durability, total control, and dependable fastening performance on every job.



€11.22
tax incl.

Product information

Key features according to our expert

  • Length: 50 mm
  • Blade thickness: Not applicable
  • Type of drive profile (bit): Hexagon
  • Connection size (bit): 1/4"
  • VDE approved: No
  • Bit profile: HEX 4 mm
  • Drive profile size (bit): 4 mm
  • Product Range: Wera Hex-Plus

Scope of delivery

  • 1x 840/4 IMP DC Impaktor Hex Bits: 4 x 50 mm

Product description

High quality Impaktor bits for hexagonal socket screws. The Impaktor technology offers an above-average service life even under extreme circumstances. Enhanced friction resistance, thanks to the rough diamond-particle coating on the bit tip, prevents any slipping out of the screw head. Hex-Plus ensures a greater contact surface in the head of the screw. The notching effect is therefore reduced to a minimum and damage to the screw head more or less eliminated. 1/4" hexagon, suitable for holders as per DIN ISO 1173-F 6.3.

  • For hexagonal socket head screws
  • Impaktor technology for above-average service life
  • Particularly suitable for use with customary impact drivers
  • Diamond coating for a secure fit in the screw, literally bites into the screwhead to prevent cam-out
  • 1/4" hexagon drive (Wera connecting series 4)

Application

  • Hexagon socket screws

Drive

  • 1/4" hexagon, suitable for DIN ISO 1173-F 6.3 bit holders

Design

  • The Impaktor technology ensures an above-average service life even under extreme conditions thanks to a best-possible utilisation of the material properties and optimally designed geometry, particularly suitable for use with conventional impact drivers, the rough diamond coating reduces the danger of any slipping out of the screw head due to the enhanced frictional resistance. Take it easy tool finder: Output colour coding (blue = hexagon) and large stamp to enable the desired bit to be easily located.

Features and benefits

  • Take it easy tool finder with colour coding according to profiles and size stamp - for simple and rapid accessing of the required tool.
  • For an above-average service life. Maximum utilisation of the material properties, a very special geometry - designed particularly to meet the extreme demands - as well a specific manufacturing process mean that Wera Impaktor tools have an above-average service life. Another product advantage is the coating of the Impaktor bits with minute diamond particles. These diamond particles reduce the cam-out effects - particularly high in power tool applications - which can lead to a slipping out of the screw head. The diamond particles literally bite themselves into the screw recess. This means that less contact pressure is required, something that greatly delays fatigue setting-in in power tool screwdriving jobs.
  • For use with impact screwdrivers. Improve productivity when screwdriving with power tools.
  • Maximum utilisation of the material properties, a very special geometry - designed particularly to meet the extreme demands - as well a specific manufacturing process mean that Wera Impaktor tools have an above-average service life.
  • Particularly high strength. Reduce the danger of premature bit breakage.
  • Torsion zone specially designed to absorb such forces and thereby protect the bit tip.
  • These diamond particles reduce the cam-out effects - particularly high in power tool applications - which can lead to a slipping out of the screw head. The diamond particles literally bite themselves into the screw recess. This means that less contact pressure is required, something that greatly delays fatigue setting-in in power tool screwdriving jobs.
  • Hexagon socket screws are a problem, because the contact surfaces that transfer the force of the tool to the screw are very narrow. The consequence: the head of the screw can be damaged, usually rounding out the recess. Hex-Plus tools have larger contact surfaces to prevent this, driving from the flats of the recess, rather than the corners. Good to know: Hex-Plus tools fit into every standard hexagon socket screw!

All Features

Length
50 mm
Blade thickness
Not applicable
Type of drive profile (bit)
Hexagon
Connection size (bit)
1/4"
Vde approved
No
Bit profile
HEX 4 mm
Drive profile size (bit)
4 mm
Product range
Wera Hex-Plus
  • Brand WERA
  • EAN 4013288157577
  • Supplier number WERA 05057644001

Frequently asked questions about this product

Answered by specialists
Are these bits suitable for impact drivers?
Yes, the Impaktor technology is engineered to withstand the extreme forces of impact drivers.
What is the benefit of the Hex-Plus profile?
Hex-Plus provides a larger contact surface inside the screw head, preventing damage to hexagon socket screws.
What drive size do these bits use?
These bits feature a standard 1/4" hexagon drive and have an overall length of 50 mm.
What is the purpose of the diamond coating?
The tiny diamond particles bite into the screw recess to reduce slipping and cam-out effects.
How many bits are included in this pack?
This set includes 5 identical Hex-Plus bits sized HEX 4 mm.
Questions about this product?

Our product specialists are happy to help with any questions about this range. Call, email or chat with us!

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