Bits for internal hexagon screws — WERA 840/4 Z bits
WERA 840/4 Z bits are specifically designed for internal hexagon screws. The product uses WERA's Hex-Plus profile, which increases the contact surface between the bit and the screw head to reduce notching and damage to the screw profile. The bits are described by the manufacturer as "tough" (hardened/reinforced) and are intended for universal screwdriving tasks in harder materials.
What the product does
WERA 840/4 Z bits transfer torque to internal hexagon screws with reduced risk of rounded or damaged recesses thanks to the Hex-Plus profile. As Z-bits, they are specified by WERA as suitable for general screwdriving applications where robust bit material is required to minimise the risk of tip breakage.
Compatibility and grip
- 1/4" hexagon drive — connection according to Wera connecting series 4.
- Suitable for holders conforming to DIN ISO 1173‑F 6.3.
Typical applications
WERA states that Z-bits are typically used for universal screwdriving tasks. This means that WERA 840/4 Z bits are typically used when the workflow requires bits for internal hexagon screws and a hardened, robust bit material.
Specifications
- Product name: WERA 840/4 Z bits.
- Manufacturer: WERA.
- Manufacturer part number: 05059661001.
- Designed for: internal hexagon screws.
- Profile: Hex-Plus (larger contact surface to reduce notching).
- Bit material description: stated as "tough" by the manufacturer (hardened/reinforced for hard materials).
- Grip/connection: 1/4" hexagon drive, compatible with holders according to DIN ISO 1173‑F 6.3.
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