What type of screws is this bit suitable for?

This bit is designed for hexagon socket screws with a size of 3 mm.

What is the advantage of the Hex-Plus profile?

Hex-Plus provides a larger contact area in the screw head, preventing rounding out and damage.

What drive connection does this Wera bit have?

It features a standard 1/4" hexagon drive according to DIN ISO 1173-D 6.3.

Is this bit suitable for hard screwdriving jobs?

Yes, the tough-absorbing (Z) design prevents premature bit breakage under high loads.

Is this bit VDE-insulated for electrical work?

No, this bit is not VDE-tested and must not be used on live electrical circuits.

WERA 840/1 Z Hex-Plus hexagon bit, 3 x 25 mm - 05056315001

Name: WERA 840/1 Z Hex-Plus hexagon bit, 3 x 25 mm - 05056315001
Brand: WERA
SKU: 87010087
Price: 3.9 EUR
Availability: InStock

Supplier number: WERA 05056315001 | EAN 4013288012654

3.90 tax incl.

€3.22 excl. VAT (incl. all environmental contributions)

On stock - immediately available

Ordered before 20:00 - delivered as of 06/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL

✆ Talk to a specialist

Reliable torque transfer by Wera

Practical benefits

Prevents rounded screw heads: The Hex-Plus profile creates larger contact surfaces to minimise notch effects and preserve screws.
Tough design absorbs peaks: Ductile and tough material properties help prevent premature bit breakage under demanding fastening loads.
Standard hexagonal drive fit: The 1/4" hex drive ensures complete compatibility with your standard bit holders and screwdriving tools.

In a nutshell

The right choise for

Tackle every fastening task with complete control using the Wera 840/1 z Hex-Plus hex bit for 3 mm socket head screws. The advanced Hex-Plus profile delivers larger contact surfaces inside the screw recess, preventing notch effects and stopping screw heads from rounding out. Thanks to its tough-absorbing design, this bit easily withstands peak loads to prevent premature breakage during mechanical repairs, bike maintenance, or furniture assembly. With a standard 1/4" hexagon drive and a compact 25 mm length, it fits seamlessly into standard bit holders and cordless screwdrivers.

Product information FAQ

€3.90

In stock - tax incl.

Key features according to our expert

Length: 25 mm
Blade thickness: Not applicable
Type of drive profile (bit): Hexagon
Connection size (bit): 1/4"
VDE approved: No
Bit profile: HEX 3 mm
Drive profile size (bit): 3 mm
Product Range: Wera Hex-Plus

Scope of delivery

840/1 Z bits, 3 x 25 mm

Product description

Tough Wera bits for hexagonal socket screws, for universal use. Hex-Plus offers larger contact surfaces in the screw head. The notch effect is reduced to a minimum and the destruction of the screw head is almost eliminated. 1/4" hexagonal, suitable for holding tools as per DIN ISO 1173-D 6.3.

For hexagonal socket head screws
Hex-Plus allows socket head screws to live longer
Tough for hard materials
1/4" hexagon drive (Wera connecting series 1)

Application

Hexagon socket screws

Drive

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

Design

Hex-Plus, tough, for universal use

Features and benefits

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!
Tough Wera bits prevent the tip from breaking prematurely. Z-bits usually are the bit for universal screwdriving applications.

All Features

Length: 25 mm
Blade thickness: Not applicable
Type of drive profile (bit): Hexagon
Connection size (bit): 1/4"
Vde approved: No
Bit profile: HEX 3 mm
Drive profile size (bit): 3 mm
Product range: Wera Hex-Plus

Brand WERA
87010087
EAN 4013288012654
Supplier number WERA 05056315001

Frequently asked questions about this product

Answered by specialists

What type of screws is this bit suitable for?: This bit is designed for hexagon socket screws with a size of 3 mm.
What is the advantage of the Hex-Plus profile?: Hex-Plus provides a larger contact area in the screw head, preventing rounding out and damage.
What drive connection does this Wera bit have?: It features a standard 1/4" hexagon drive according to DIN ISO 1173-D 6.3.
Is this bit suitable for hard screwdriving jobs?: Yes, the tough-absorbing (Z) design prevents premature bit breakage under high loads.
Is this bit VDE-insulated for electrical work?: No, this bit is not VDE-tested and must not be used on live electrical circuits.

Questions about this product?

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

Chat with us

0800 0226 945 [email protected]