What is the Dewalt DT4592-QZ extension used for?

This extension increases your drilling depth by 140 mm when using self-feed wood drill bits.

Which drill bits are compatible with this extension?

It is designed for Dewalt self-feed machine wood bits and compatible wood drilling bits.

How is the drill bit secured in the extension?

The drill bit is locked firmly into position using set screws and the included hex key.

Does this extension fit into standard drill chucks?

Yes, the shank features flat sides to fit standard drill chucks and prevent slipping under heavy torque.

DEWALT DT4592-QZ machine wood drill extension bit 140 mm

Name: DEWALT DT4592-QZ machine wood drill extension bit 140 mm
Brand: DEWALT
SKU: 02856264
Price: 13.95 EUR
Availability: InStock

Supplier number: DEWALT DT4592-QZ | EAN 5035048072172

Recommended Retail Price €31.46

13.95 tax incl.

€11.53 excl. VAT (incl. all environmental contributions)

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

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

✆ Talk to a specialist

What does this mean exactly?

Free battery, delivered directly: spend a total of €350 excl. VAT on DeWALT products and receive a free XR 18V 5.0Ah battery worth €128.38. This is an exclusive Klium promotion: the battery is automatically added to your shopping cart and delivered together with your order.
Free work light, delivered after registration: if you also purchase a participating product from the DeWALT work light promotion, you will receive a free DeWALT work light, depending on the participating machine.
To receive your free work light, register your purchase after receiving your order via dewalt.be or dewalt.nl.
Klium free battery promotion: valid from 01.10.2026 to 31.12.2026.
DeWALT work light promotion: valid from 01.09.2026 to 31.12.2026.

During DeWALT Power Month, you can combine a free battery from Klium with a free work light from DeWALT.

Extended reach by Dewalt

Practical benefits

Deeper drilling in timber: Adding 140 mm of length lets you bore through thick beams and deep wooden structures effortlessly.
Secure and stable fit: The solid construction locks tightly with your wood bits to eliminate wobble during heavy drilling tasks.
Positive grip in chucks: A hexagonal shank prevents slippage in your drill chuck, ensuring consistent torque transfer under load.

In a nutshell

The right choise for

With the Dewalt DT4592-QZ 140 mm machine wood drill bit extension, you effortlessly expand the drilling depth of your wood bits and self-feed cutters. When boring deep holes through thick structural beams or routing pipework and wiring through timber frames, it lets you drill straight through in a single pass without working from both sides. The drill bit locks tightly in place using set screws and the included hex key, eliminating unwanted wobble while drilling. In addition, the shank with flat sides fits securely into standard drill chucks, ensuring dependable torque transfer and preventing slippage under heavy loads.

Product information FAQ

€13.95

In stock - tax incl.

Key features according to our expert

Length: 140 mm

Product description

Machine wood drill extension 140mm

Features

For fast drilling of clean and accurate holes in hardwood, softwood, wooden boards and plasterboard
Non-slip shank. Three flat surfaces prevent rotation in the chuck and ensure maximum power transmission
Threaded guide point draws forstner bit through the material

All Features

Length: 140 mm
Performance: 1,0 mm
Thickness: 1,0
Diameter: Wood
Weight: NO

Brand DEWALT
02856264
EAN 5035048072172
Supplier number DEWALT DT4592-QZ

Frequently asked questions about this product

Answered by specialists

What is the Dewalt DT4592-QZ extension used for?: This extension increases your drilling depth by 140 mm when using self-feed wood drill bits.
Which drill bits are compatible with this extension?: It is designed for Dewalt self-feed machine wood bits and compatible wood drilling bits.
How is the drill bit secured in the extension?: The drill bit is locked firmly into position using set screws and the included hex key.
Does this extension fit into standard drill chucks?: Yes, the shank features flat sides to fit standard drill chucks and prevent slipping under heavy torque.