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WERA 851/4 IMP DC SB SiS bit Phillips, PH 3 x 50 mm - 05073957001

Supplier number: WERA 05073957001 | EAN 4013288158499
11.97 tax incl.
€9.89 excl. VAT (incl. all environmental contributions)
On stock - immediately available | we have 4 products in stock.
blister

  • Ordered before 20:00 - delivered tomorrow 23/10/2026
  • Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
  • Delivery by DHL

Reliable screwdriving with Wera

Practical benefits
  • Secure cam-out prevention: The rough diamond coating bites firmly into the screw recess to stop slippage while driving.
  • Built for impact drivers: You can handle severe torque peaks safely when using standard impact tools on heavy jobs.
  • Extended service life: Specially engineered materials and geometry ensure long durability under extreme fastening conditions.

In a nutshell

The right choise for

Tackle demanding fastening tasks with complete confidence using the Wera 851/4 imp DC sb Impaktor bit. Measuring 50 mm in length with a PH3 tip and a 1/4" hexagon drive, this bit is engineered to withstand the extreme torque peaks of impact drivers. The advanced Impaktor technology delivers an extended service life and helps prevent premature breakage during heavy continuous use. Thanks to the rough diamond coating, the bit tip bites firmly into the screw recess to stop slipping and eliminate cam-out. Ideal for heavy timber framing and metal construction, it keeps your screwdriving fast, accurate, and under control.



€11.97
In stock - tax incl.

Product information

Key features according to our expert

  • Length: 50 mm
  • Drive profile size (bit): 3
  • Blade thickness: Not applicable
  • Type of drive profile (bit): Phillips
  • Connection size (bit): 1/4"
  • VDE approved: No
  • Bit profile: PH3
  • Number per blister: 1

Scope of delivery

  • 851/4 IMP DC SB Impaktor bits, PH 3 x 50 mm

Product description

High quality bits for Phillips 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. Particularly suitable for use with customary impact drivers. 1/4" hexagon, suitable for holders as per DIN ISO 1173-F 6.3.

  • For Phillips 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

  • Phillips 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 (red = Phillips) and large stamp to enable the desired bit to be easily located.

Features and benefits

  • 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.
  • Wera Impaktor bits and holders can also be used individually. However, the best results are achieved with the combination of the two tools that are optimally matched to one another.
  • Take it easy tool finder with colour coding according to profiles and size stamp - for simple and rapid accessing of the required tool.

All Features

Length
50 mm
Drive profile size (bit)
3
Blade thickness
Not applicable
Type of drive profile (bit)
Phillips
Connection size (bit)
1/4"
Vde approved
No
Bit profile
PH3
Number per blister
1
  • Brand WERA
  • EAN 4013288158499
  • Supplier number WERA 05073957001

Frequently asked questions about this product

Answered by specialists
Which screw type is this bit suitable for?
This bit is designed for Phillips cross-recess screws with size PH3.
Can this bit be used with an impact driver?
Yes, the Impaktor technology is specially engineered to withstand the extreme forces of impact drivers.
What is the purpose of the diamond coating?
The diamond coating bites into the screw head to increase grip and prevent cam-out.
What connection drive does this bit have?
It features a standard 1/4" hexagon drive (DIN ISO 1173-F 6.3) with an overall length of 50 mm.
Is this bit VDE insulated for electrical work?
No, this bit is not VDE certified or insulated for live electrical work.
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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