Which screwdriver bit do you need for these screws?

Use a T20 bit, ideally a T-STAR plus T20 bit, for optimal grip and precise power transmission without slipping.

Is pre-drilling required when using these screws?

Pre-drilling is not required in softwoods and engineered wood panels like MDF. Pre-drilling is recommended for hardwoods.

What is the advantage of a full thread?

A full thread provides maximum pull-out resistance along the entire screw length, making it ideal for attaching hardware and fittings to wood.

What is the purpose of the WIROX coating?

The WIROX coating provides significantly higher corrosion resistance than conventional zinc plating and is optimized for indoor use.

What is the function of the countersunk multi head?

The multi head countersinks cleanly and flush into wood without splitting it, and stops against metal when fastening hardware.

SPAX 1191010400505 chipboard screw 4 x 50 mm full thread countersunk head T-STAR plus T20 steel

Name: SPAX 1191010400505 chipboard screw 4 x 50 mm full thread countersunk head T-STAR plus T20 steel
Brand: SPAX
SKU: 02338350
Price: 0.06 EUR
Availability: InStock

Supplier number: SPAX 1191010400505 | EAN 4003530107917

0.06 tax incl.

€0.05 excl. VAT (incl. all environmental contributions)

On stock - immediately available

The minimum purchase order quantity for the product is 500.

Ordered before 20:00 - delivered tomorrow 16/10/2026
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

Smooth and reliable fastening with Spax

Practical benefits

Secure bit grip control: The T-STAR plus T20 drive ensures precise engagement and prevents slipping while you drive screws into dense wood.
Clean flush surface finish: The countersunk multi head neatly mills into the timber to give you a completely seamless and splinter-free result.
Effective long-term corrosion resistance: Coated with a protective Wirox finish, these steel screws resist rust effectively during indoor assembly work.

In a nutshell

The right choise for

With Spax chipboard screws, you assemble wooden structures, furniture, and fittings quickly and reliably. The t-star plus T20 drive ensures precise bit engagement without slipping, giving you total control while driving each screw. Thanks to the 4 x 50 mm full thread, you benefit from maximum pull-out resistance along the entire length. The countersunk multi head countersinks cleanly and flush into the wood surface without splitting. Furthermore, the Wirox coating effectively protects the steel against corrosion in indoor applications. This pack of 500 screws helps you complete every interior woodworking task with clean and dependable results.

Product information FAQ

€0.06

In stock - tax incl.

Key features according to our expert

Diameter: 4 mm
Material (Screw): Steel
Surface treatment screw: Wirox
Head shape (screw): Countersunk
type (screw head): T20
Drive type: Torx
Bolt/screw type: Full thread
Thread length: 45 mm
Length: 50 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:

T-STAR plus: secure bit grip, no cam-out effect, optimal force transmission
Blue zinc plated A2J

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: 4 mm
Material (screw): Steel
Surface treatment screw: Wirox
Head shape (screw): Countersunk
Type (screw head): T20
Drive type: Torx
Bolt/screw type: Full thread
Thread length: 45 mm
Length: 50 mm
Wire length: 45 mm

Brand SPAX
02338350
EAN 4003530107917
Supplier number SPAX 1191010400505

Frequently asked questions about this product

Answered by specialists

Which screwdriver bit do you need for these screws?: Use a T20 bit, ideally a T-STAR plus T20 bit, for optimal grip and precise power transmission without slipping.
Is pre-drilling required when using these screws?: Pre-drilling is not required in softwoods and engineered wood panels like MDF. Pre-drilling is recommended for hardwoods.
What is the advantage of a full thread?: A full thread provides maximum pull-out resistance along the entire screw length, making it ideal for attaching hardware and fittings to wood.
What is the purpose of the WIROX coating?: The WIROX coating provides significantly higher corrosion resistance than conventional zinc plating and is optimized for indoor use.
What is the function of the countersunk multi head?: The multi head countersinks cleanly and flush into wood without splitting it, and stops against metal when fastening hardware.