Which screw bit do you need for these screws?

You need a T20 bit, ideally a Spax T-STAR plus T20 bit for optimal engagement and grip.

What is the advantage of the partial thread design?

The partial thread pulls the attached component tight against the base timber without gaps.

Do you need to pre-drill in softwood with these screws?

Thanks to the 4CUT point and countersunk milling ribs, pre-drilling is not required in softwood.

What is the benefit of the WIROX coating?

The WIROX finish provides significantly higher corrosion resistance than standard zinc plating.

What are the exact dimensions of this screw?

The screw has a diameter of 5 mm, a total length of 90 mm, and a thread length of 61 mm.

SPAX 0191010500905 chipboard screw 5 x 90 mm countersunk head T-STAR plus T20 steel

Name: SPAX 0191010500905 chipboard screw 5 x 90 mm countersunk head T-STAR plus T20 steel
Brand: SPAX
SKU: 02338839
Price: 0.18 EUR
Availability: InStock

Supplier number: SPAX 0191010500905 | EAN 4003530154324

0.18 tax incl.

€0.15 excl. VAT (incl. all environmental contributions)

On stock - immediately available

The minimum purchase order quantity for the product is 200.

Ordered before 20:00 - delivered as of 13/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL

✆ Talk to a specialist

Clean and solid timber joints

Practical benefits

Maximum driving force transmission: The T-STAR plus T20 drive ensures your bit stays firmly aligned to prevent slipping.
Tight joint clamping power: The partial thread draws timber components tightly against each other without leaving gaps.
Reliable corrosion resistance: The Spax WIROX finish delivers dependable surface protection for your covered outdoor wood projects.

In a nutshell

The right choise for

With Spax chipboard screws, you create strong, flush timber joints for interior construction, framing, and covered outdoor structures. The 61 mm partial thread pulls wooden beams, battens, and boards firmly against the base structure without leaving gaps. Thanks to the 4CUT point and countersunk multi-head, the screw drives in smoothly and sits flush in softwood without pre-drilling or splitting the wood. The t-star plus T20 drive ensures solid bit engagement, transferring maximum torque without slipping. In addition, the Wirox coating provides high corrosion resistance for lasting durability. This 200-piece pack of 5 x 90 mm screws provides dependable performance for your daily woodwork.

Product information FAQ

€0.18

In stock - tax incl.

Key features according to our expert

Diameter: 5 mm
Material (Screw): Steel
Surface treatment screw: Wirox
Head shape (screw): Countersunk
type (screw head): T20
Drive type: Torx
Bolt/screw type: Partial wire
Thread length: 61 mm
Length: 90 mm

Product description:

Flat countersunk head, T-STAR plus
With MULTI Head and 4CUT, hardened, synthetic coating
Blue zinc plated A2J

Application:

Universal usage

Advantages:

No pre-drilling (wood-dependent)
Quick and safe fastening with reduced driving in torque (more screwed connections per battery charge)
Effectively reduces splitting of the wooden material, even when close to the edge
Multifunctional applications indoors

Special properties:

Partial thread: firm tightening of the upper wood layer
Blue zinc plated A2J
T-STAR plus: secure bit grip, no cam-out effect, optimal force transmission

Features:

4CUT: allows screwing in without pre-drilling (wood-dependent), reduces splitting as square end displaces the fibres
Ground serrations: up to the point - quick and secure fastening
MULTI Head: flush countersinking. Mills in wood and stops on metal

All Features

Diameter: 5 mm
Material (screw): Steel
Surface treatment screw: Wirox
Head shape (screw): Countersunk
Type (screw head): T20
Drive type: Torx
Bolt/screw type: Partial wire
Thread length: 61 mm
Length: 90 mm
Wire length: 61 mm

Brand SPAX
02338839
EAN 4003530154324
Supplier number SPAX 0191010500905

Frequently asked questions about this product

Answered by specialists

Which screw bit do you need for these screws?: You need a T20 bit, ideally a Spax T-STAR plus T20 bit for optimal engagement and grip.
What is the advantage of the partial thread design?: The partial thread pulls the attached component tight against the base timber without gaps.
Do you need to pre-drill in softwood with these screws?: Thanks to the 4CUT point and countersunk milling ribs, pre-drilling is not required in softwood.
What is the benefit of the WIROX coating?: The WIROX finish provides significantly higher corrosion resistance than standard zinc plating.
What are the exact dimensions of this screw?: The screw has a diameter of 5 mm, a total length of 90 mm, and a thread length of 61 mm.