What is the advantage of the fixing thread?

The fixing thread pulls the top board tight against the substructure, effectively minimising creaking noises.

Which screwdriver bit do you need?

Use a T25 bit with T-STAR plus drive for a secure grip and optimal power transmission without slipping.

Do you need to pre-drill before driving these screws?

Thanks to the CUT point, pre-drilling is often unnecessary in softwoods. Pre-drilling is still recommended for hardwoods.

Is A2 stainless steel suitable for outdoor use?

Yes, A2 stainless steel provides high corrosion resistance for outdoor wooden decks and terraces.

Why choose a cylindrical head?

The small cylindrical head sinks flush into the wood with low splitting effect, creating a clean, unobtrusive finish.

SPAX 0537000500403 decking screw 5 x 40 mm fixing thread cylinder head T-STAR plus T25 stainless steel A2

Name: SPAX 0537000500403 decking screw 5 x 40 mm fixing thread cylinder head T-STAR plus T25 stainless steel A2
Brand: SPAX
SKU: 02339444
Price: 0.23 EUR
Availability: InStock

Supplier number: SPAX 0537000500403 | EAN

0.23 tax incl.

€0.19 excl. VAT (incl. all environmental contributions)

On stock - immediately available

The minimum purchase order quantity for the product is 200.

Delivery by DHL

✆ Talk to a specialist

Stable decking assembly with Spax

Practical benefits

Secure and creak-free boards: The fixing thread pulls decking boards tightly onto the substructure to prevent loosening and reduce creaking noise.
Reduced risk of splitting: The sharp CUT point enables precise placement and drives smoothly without cracking or splitting the timber.
Flush and clean finish: The small cylinder head sinks neatly into the wood surface to ensure a smooth and discreet appearance.

In a nutshell

The right choise for

With Spax decking screws, you can install timber decking and terraces that stay solid and creak-free over time. The integrated fixing thread clamps deck boards tightly against the substructure, effectively eliminating annoying squeaking noises. Thanks to the sharp cut point, you can drive screws in with precision while significantly reducing the risk of splitting the timber. The small cylinder head sinks neatly flush into the wood surface to ensure a clean, unobtrusive finish underfoot. The t-star plus T25 drive offers optimal power transfer and prevents bit slipping, while the A2 stainless steel provides dependable weather and corrosion resistance outdoors. You build decks quickly, accurately and with total confidence.

Product information FAQ

€0.23

In stock - tax incl.

Key features according to our expert

Length: 40 mm
type (screw head): T25
Material: Stainless steel
Drive type: Torx

Product description:

Cylindrical head, T-STAR plus
With SPAX CUT point, Fixing thread, synthetic coating
Stainless steel A2 II

Application:

Wooden decks in the outside area

Advantages:

The fixing thread fixes the top board
Minimises creaking of floor structure
The small cylinder head pulls flush into the wood and provides the perfect appearance

Special properties:

SPAX CUT point: precision placement, allows screwing in without pre-drilling (wood-dependent), effectively reduces splitting of the wood
Cylindrical head: low splitting effect, pulls flush into the wood
Fixing thread: permanently attaches the cover board to the substructure and minimises creaking. Together with the plain shank it pulls the top board down tight (vice effect)
Stainless steel A2 II: high corrosion protection
T-STAR plus: secure bit grip, no cam-out effect, optimal force transmission

Features:

SPAX typical ground serrations: quick and secure fastening

All Features

Length: 40 mm
Type (screw head): T25
Material: Stainless steel
Drive type: Torx
Wire length: 21 mm

Brand SPAX
02339444
EAN
Supplier number SPAX 0537000500403

Frequently asked questions about this product

Answered by specialists

What is the advantage of the fixing thread?: The fixing thread pulls the top board tight against the substructure, effectively minimising creaking noises.
Which screwdriver bit do you need?: Use a T25 bit with T-STAR plus drive for a secure grip and optimal power transmission without slipping.
Do you need to pre-drill before driving these screws?: Thanks to the CUT point, pre-drilling is often unnecessary in softwoods. Pre-drilling is still recommended for hardwoods.
Is A2 stainless steel suitable for outdoor use?: Yes, A2 stainless steel provides high corrosion resistance for outdoor wooden decks and terraces.
Why choose a cylindrical head?: The small cylindrical head sinks flush into the wood with low splitting effect, creating a clean, unobtrusive finish.