What applications is this screw suitable for?

It is designed specifically for fixing wooden cladding and facade panels outdoors.

Which driver bit size is required?

You need a T-STAR plus T20 or standard Torx T20 screwdriver bit.

What is the purpose of the partial thread?

The partial thread pulls the outer cladding board tightly against the supporting batten.

Is this screw resistant to outdoor corrosion?

Yes, the A2 stainless steel construction provides high resistance against rust and weather.

What is the advantage of the raised countersunk head with ribs?

The ribs ensure clean, flush countersinking into the wood without splintering the surface.

SPAX 25170404507021 facade screw 4.5 x 70 mm threaded, countersunk head, T-STAR plus T22

Name: SPAX 25170404507021 facade screw 4.5 x 70 mm threaded, countersunk head, T-STAR plus T22
Brand: SPAX
SKU: 03334125
Price: 0.35 EUR
Availability: InStock

Supplier number: SPAX 25170404507021 | EAN 4003530290749

0.35 tax incl.

€0.29 excl. VAT (incl. all environmental contributions)

On stock - immediately available

The minimum purchase order quantity for the product is 100.

Delivery by DHL

✆ Talk to a specialist

Clean installation for exterior cladding

Practical benefits

Maximum driving grip: The T20 drive provides optimal bit engagement, letting you drive every Spax screw without slipping.
Smooth countersunk finish: Integrated milling ribs under the raised countersunk head allow you to seat the screw flush into the wood.
Reliable corrosion resistance: Made from A2 stainless steel with a black BLAX finish, it reliably protects your outdoor projects against weathering.

In a nutshell

The right choise for

With Spax facade screws, you install wooden cladding cleanly, quickly, and securely. Thanks to the partial thread design, you pull cladding boards tightly and seamlessly against the timber battens. The raised countersunk head with milling ribs sinks flush into the wood without splitting the surface, while the black blax coating provides a discreet finish on dark timber. Made from A2 stainless steel, these screws deliver reliable protection against corrosion and harsh weather in outdoor applications. In addition, the t-star plus T20 drive guarantees optimal bit engagement without slipping, giving you full control during every drive.

Product information FAQ

€0.35

In stock - tax incl.

Key features according to our expert

Diameter: 4,5 mm
Material (screw): Stainless steel
Surface treatment (screw): Bright
Head shape (screw): Countersunk
type (screw head): T20
Drive type: Torx
Bolt/screw type: Partial wire
Length: 70 mm

Product description

The extra small countersunk head is particularly suitable for partially invisible screw fastening in the groove or through the tongue of façade profiles
Application: wooden facades

The trend towards natural building materials continues unabated. Especially for facades, this is an ever-present topic. Timber is an aesthetically attractive and ecologically sound cladding material. Wooden facades are usually designed as so-called ventilated facades. The visible profiled wood is screwed to a substructure that is also largely made of wood.

Which screw is best to use for this depends not only on the profile shape of the timber and whether it is a visible or invisible fastening. The aesthetic requirements of the building owner also play a role. Recently, there has been a trend towards dark or black curtain walls. SPAX responds to this trend with the new BLAX black facade screws.

The SPAX facade screw with partial thread and CUT point is most suitable for universal mounting of facade panels. The arrow-shaped tip allows precise positioning of the screw and reduces splitting of the wood. The decorative lens head enables clean countersinking into the wood surface thanks to the milling ribs.

All screws are slip-coated and offer a high degree of corrosion protection, as they are made of high-quality A2 stainless steel. The precisely fitting T-STAR plus drive ensures a secure fit of the SPAX bit and the best possible power transfer when screwing. The screws are ETA approved, have CE marking and are Made in Germany.

All Features

Diameter: 4,5 mm
Material (screw): Stainless steel
Surface treatment (screw): Bright
Head shape (screw): Countersunk
Type (screw head): T20
Drive type: Torx
Bolt/screw type: Partial wire
Length: 70 mm

Brand SPAX
03334125
EAN 4003530290749
Supplier number SPAX 25170404507021

Frequently asked questions about this product

Answered by specialists

What applications is this screw suitable for?: It is designed specifically for fixing wooden cladding and facade panels outdoors.
Which driver bit size is required?: You need a T-STAR plus T20 or standard Torx T20 screwdriver bit.
What is the purpose of the partial thread?: The partial thread pulls the outer cladding board tightly against the supporting batten.
Is this screw resistant to outdoor corrosion?: Yes, the A2 stainless steel construction provides high resistance against rust and weather.
What is the advantage of the raised countersunk head with ribs?: The ribs ensure clean, flush countersinking into the wood without splintering the surface.