What drive size does this bit have?

This bit has a 5/16" hexagon drive, suitable for bit holders complying with DIN ISO 1173-D 8.

What is the advantage of the Hex-Plus profile?

Hex-Plus provides larger contact surfaces to prevent rounding out and damaging hexagon socket screws.

What are the dimensions of this bit?

The bit has a 6 mm hexagon tip and an overall length of 30 mm.

What does the Z designation mean for Wera bits?

The Z stands for tough-absorbing bits, preventing premature breakage of the tip in universal screwdriving applications.

Is this bit VDE-certified for electrical work?

No, this bit is not VDE-tested and is not insulated for live electrical work.

WERA 840/2 Z hexagon bit, 6 x 30 mm - 05057520001

Name: WERA 840/2 Z hexagon bit, 6 x 30 mm - 05057520001
Brand: WERA
SKU: 87010091
Price: 6.84 EUR
Availability: InStock

Supplier number: WERA 05057520001 | EAN 4013288012784

6.84 tax incl.

€5.65 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 5 products in stock.

Ordered before 20:00 - delivered tomorrow 21/10/2026
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 screwdriving with Wera

Practical benefits

Prevents rounded screw heads: The specialized profile provides larger contact surfaces so you avoid damaging or stripping hexagon socket screws.
Tough for hard materials: Engineered for universal heavy-duty fastening, you prevent premature bit tip breakage during demanding tasks.
Secure direct hex connection: With its 5/16" hexagonal drive and 30 mm length, you achieve a stable fit in compatible tool holders.

In a nutshell

The right choise for

With the Wera 840/2 z Hex-Plus hexagon bit, you fasten and loosen internal hexagon socket screws with maximum control. Thanks to the smart Hex-Plus profile, you get larger contact surfaces inside the screw head, effectively preventing stripping and rounding out. Its tough-absorbing design ensures outstanding reliability during heavy-duty screwdriving in hard materials, protecting the tip against premature breakage. Featuring a robust 5/16" hexagon drive and a compact 30 mm length, this 6 mm bit fits securely into din iso 1173-D 8 holders for stable, direct torque transfer.

Product information FAQ

€6.84

In stock - tax incl.

Key features according to our expert

Length: 30 mm
Drive profile size (bit): 6 mm
Blade thickness: Not applicable
Type of drive profile (bit): Hexagon
Connection size (bit): 5/16"
VDE approved: No
Bit profile: HEX 6 mm

Scope of delivery

840/2 Z Bits, 6 x 30 mm

Product description

Tough viscous Wera bits for hexagon socket screws for universal use. Hex-Plus offers 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. 5/16" hexagon, suitable for holders as per DIN ISO 1173-D 8.

For hexagonal socket head screws
Tough for hard materials
Hex-Plus allows socket head screws to live longer
5/16" hexagon drive (Wera connecting series 2)

Application

Hexagon socket screws

Drive

5/16" hexagon, suitable for DIN ISO 1173-D 8 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: 30 mm
Drive profile size (bit): 6 mm
Blade thickness: Not applicable
Type of drive profile (bit): Hexagon
Connection size (bit): 5/16"
Vde approved: No
Bit profile: HEX 6 mm

Brand WERA
87010091
EAN 4013288012784
Supplier number WERA 05057520001

Frequently asked questions about this product

Answered by specialists

What drive size does this bit have?: This bit has a 5/16" hexagon drive, suitable for bit holders complying with DIN ISO 1173-D 8.
What is the advantage of the Hex-Plus profile?: Hex-Plus provides larger contact surfaces to prevent rounding out and damaging hexagon socket screws.
What are the dimensions of this bit?: The bit has a 6 mm hexagon tip and an overall length of 30 mm.
What does the Z designation mean for Wera bits?: The Z stands for tough-absorbing bits, preventing premature breakage of the tip in universal screwdriving applications.
Is this bit VDE-certified for electrical work?: No, this bit is not VDE-tested and is not 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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