What is the purpose of the bore hole in these Torx bits?

The bore hole (BO) is designed to fit tamper-proof screws with a safety pin.

What drive size do these bits use?

The bits feature a standard 1/4" hexagon drive.

What is the overall length of the bit?

Each bit has an overall length of 70 mm.

Can these bits also be used on standard Torx screws?

Yes, they fit both standard Torx screws and tamper-proof security screws.

How many bits are included in this package?

This set contains 2 pieces of TX 25 x 70 mm bits with bore hole.

WERA 867/4 Z TORX BO SB bits with bore SB, TX 25 x 70 mm (2 pcs) - 05073071001

Name: WERA 867/4 Z TORX BO SB bits with bore SB, TX 25 x 70 mm (2 pcs) - 05073071001
Brand: WERA
SKU: 03177053
Price: 22.2 EUR
Availability: PreOrder

Supplier number: WERA 05073071001 | EAN 4013288202611

Recommended Retail Price €39.52

22.20 tax incl.

€18.35 excl. VAT (incl. all environmental contributions)

On order: delivered from 27/10/2026

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The minimum purchase order quantity for the product is 5.

Delivery by DHL

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Secure fastening for tamper-proof screws

Practical benefits

Wera bits with borehole: The specialized bore hole lets you drive tamper-resistant Torx screws featuring a central security pin.
Extended reach in recesses: A 70 mm overall length ensures you easily access deep-set screws in confined spaces.
Tough design prevents breakage: The tough-absorbing design absorbs peak loads and prevents premature tip breakage in hard materials.

In a nutshell

The right choise for

With the Wera 867/4 z Torx bo bits, you can drive and remove tamper-proof security screws with a central safety pin effortlessly. The integrated bore hole fits tamper-resistant fasteners securely and works equally well on standard Torx screws. Thanks to the 70 mm length, you easily bridge deep screw recesses and access confined workspaces. The tough-absorbing z design handles peak loads to prevent premature tip breakage during demanding fastening tasks. Featuring a standard 1/4" hexagon drive, this two-piece pack of tx 25 bits fits straight into your bit holder or drill driver.

Product information FAQ

€22.20

tax incl.

Key features according to our expert

Length: 70 mm
Drive profile size (bit): 25
Blade thickness: Not applicable
Type of drive profile (bit): Torx
Connection size (bit): 1/4"
VDE approved: No
Bit profile: T25

Scope of delivery

867/4 Z TORX® BO SB bits with bore hole, TX 25 x 70 mm, 2 pieces
2x 867/4 Z TORX® BO bits with bore hole: TX 25 x 70 mm

Product description

Premium bits for TORX® socket screws. The hole in the bit and the pin in the TORX® BO screw prevent unauthorized loosening. Safety connection. Tough, for universal use. 1/4" hexagonal, suitable for holding tools as per DIN ISO 1173-D 6.3.

For recessed TORX® screws with securing pin
TORX® bit with bore hole on the output side
Tough for hard materials
1/4" hexagon drive (Wera connecting series 4)

Application

TORX® socket screws with safety pin (BO = with bore hole)

Drive

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

Design

TORX® with bore hole, tough, for universal use

Features and benefits

TORX® tools with a borehole prevent the unauthorised unfastening of safety screws. The screws contain a pin that protrudes into the drive profile so that "normal" TORX® tools cannot be used. This pin fits into the borehole of TORX® BO tools allowing safety screws to be unfastened.
Tough Wera bits prevent the tip from breaking prematurely. Z-bits usually are the bit for universal screwdriving applications.

All Features

Length: 70 mm
Drive profile size (bit): 25
Blade thickness: Not applicable
Type of drive profile (bit): Torx
Connection size (bit): 1/4"
Vde approved: No
Bit profile: T25

Brand WERA
03177053
EAN 4013288202611
Supplier number WERA 05073071001

Frequently asked questions about this product

Answered by specialists

What is the purpose of the bore hole in these Torx bits?: The bore hole (BO) is designed to fit tamper-proof screws with a safety pin.
What drive size do these bits use?: The bits feature a standard 1/4" hexagon drive.
What is the overall length of the bit?: Each bit has an overall length of 70 mm.
Can these bits also be used on standard Torx screws?: Yes, they fit both standard Torx screws and tamper-proof security screws.
How many bits are included in this package?: This set contains 2 pieces of TX 25 x 70 mm bits with bore hole.

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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