Product Overview
The Wera 840/4 Z Hex-Plus bit 05059634001 is a bit for internal hexagon (hex) screws. The product is specified as a 4.0 mm Hex-Plus bit with a blade length of 152 mm (6") and a 1/4" hexagon drive for tool holders.Function and Design
This 840/4 Z Hex-Plus bit features a Hex-Plus profile, which increases the contact surface against the screw's flanks rather than its corners. According to manufacturer documentation, Hex-Plus reduces the cam-out effect, thereby protecting the screw recess from damage. The Z-version is indicated as a hard/tough variant intended for general screwing applications where the bit must withstand demanding stresses without premature tip breakage. The use of a 1/4" hexagon drive places the bit in Wera's connecting series 4, and the datasheet explicitly states that it is suitable for holders according to DIN ISO 1173-F 6.3.Documentation
See datasheet from the manufacturerTypical Applications
- For driving internal hexagon (hex) screws.
- General/universal screwing applications, as described for the Z-version in the manufacturer's documentation.
Specifications
- Manufacturer: WERA
- Product name / type: Wera 840/4 Z Hex-Plus bit 05059634001
- Host size (hex): 4.0 mm
- Blade length: 152 mm (6")
- Drive: 1/4" hexagon drive (Wera connecting series 4)
- Suitability: for internal hexagon (hex) screws
- Profile: Hex-Plus (larger contact surface to reduce cam-out)
- Variant: Z (tough / extra rigid as indicated by the manufacturer)
- Compatibility with holders: according to DIN ISO 1173-F 6.3
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