What type of screws is this bit designed for?

This bit is specifically designed for screws with a Pozidriv profile in size PZ 1.

What drive connection does this bit have?

It has a standard 1/4" hexagon drive fitting DIN ISO 1173-D 6.3 bit holders.

What is the benefit of the TH torsion zone?

The torsion zone absorbs peak torque loads to prevent premature wear and extend service life.

How many bits are included in this set?

This package includes 2 pieces of the Wera 855/1 TH PZ 1 x 25 mm bit.

Is this bit VDE-insulated for electrical work?

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

WERA 855/1 TH SB SiS bit Pozidriv, PZ 1 x 25 mm (2 pcs) - 05073370001

Name: WERA 855/1 TH SB SiS bit Pozidriv, PZ 1 x 25 mm (2 pcs) - 05073370001
Brand: WERA
SKU: 02822784
Price: 6.64 EUR
Availability: InStock

Supplier number: WERA 05073370001 | EAN 4013288029638

6.64 tax incl.

€5.49 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 2 products in stock.

blister

Delivery by DHL

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Reliable fastening with Wera bits

Practical benefits

Extended bit service life: The integrated torsion zone absorbs peak torque loads, helping you prevent premature wear and sudden tip breakage.
Accurate screw head fit: The precise PZ 1 profile engages Pozidriv fasteners snugly, ensuring you transfer torque without slipping or cam-out.
Standard hex drive compatibility: With the 1/4" hexagonal connection, you can insert these bits into virtually any standard holder or drill chuck.

In a nutshell

The right choise for

Tackle screwdriving tasks in wood, metal, and plastic with confidence using the Wera 855/1 th sb SiS Pozidriv bit set. The integrated th torsion zone effectively cushions peak torque loads, preventing premature wear and bit breakage during demanding applications. Its accurate PZ1 profile seats snugly into Pozidriv screw heads, eliminating slippage and cam-out for clean fastening. Equipped with a standard 1/4" hexagon drive matching din iso 1173-D 6.3 holders, these 25 mm bits fit smoothly into your bit holders, cordless drills, and impact drivers. With 2 pieces included in the pack, you always have a dependable replacement ready for the workshop and jobsite.

Product information FAQ

€6.64

In stock - tax incl.

Key features according to our expert

Length: 25 mm
Drive profile size (bit): 1
Blade thickness: Not applicable
Type of drive profile (bit): Pozidriv
Connection size (bit): 1/4"
VDE approved: No
Bit profile: PZ1
Number per blister: 2

Scope of delivery

855/1 TH SB bits, PZ 1 x 25 mm, 2 pieces
2x 855/1 TH bits: PZ 1 x 25 mm

Product description

Premium bits with torsion zone into which kinetic energy is dissipated during peak loads. This significantly increases the product life. Extra-hard. 1/4" hexagonal, suitable for holding tools as per DIN ISO 1173-D 6.3.

Suitable for Pozidriv screws
Torsion zone for absorption of peak loads
Enhanced service life of the bits
Particularly hard for semi-hard materials
1/4" hexagon drive (Wera connecting series 1)

Application

Suitable for Pozidriv screws

Drive

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

Design

Torsion-style design to reduce premature wear, extra-hard

Features and benefits

TH-Bits are hard bits with a torsion zone. Torsion bits absorb the damaging peak torque loads in the torsion zone. This prevents premature wear and enhances the service life of the bits.

All Features

Length: 25 mm
Drive profile size (bit): 1
Blade thickness: Not applicable
Type of drive profile (bit): Pozidriv
Connection size (bit): 1/4"
Vde approved: No
Bit profile: PZ1
Number per blister: 2

Brand WERA
02822784
EAN 4013288029638
Supplier number WERA 05073370001

Frequently asked questions about this product

Answered by specialists

What type of screws is this bit designed for?: This bit is specifically designed for screws with a Pozidriv profile in size PZ 1.
What drive connection does this bit have?: It has a standard 1/4" hexagon drive fitting DIN ISO 1173-D 6.3 bit holders.
What is the benefit of the TH torsion zone?: The torsion zone absorbs peak torque loads to prevent premature wear and extend service life.
How many bits are included in this set?: This package includes 2 pieces of the Wera 855/1 TH PZ 1 x 25 mm bit.
Is this bit VDE-insulated for electrical work?: No, this screwdriver bit is not VDE-tested 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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