Which screwdriver bit is required for these screws?

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

What is the purpose of the full thread on this screw?

Full thread provides maximum pull-out resistance and a secure hold in thin materials or hardware fittings.

Why is the screw black zinc-plated?

The black zinc plating provides corrosion resistance indoors and a clean look when mounting dark fittings or materials.

What are the exact dimensions of this screw?

The screw has a thread diameter of 4 mm and a total length of 20 mm.

How does the countersunk multi head work?

The countersunk multi head cuts cleanly flush into wood without splitting and seats neatly into hardware fittings.

SPAX 1191040400203 chipboard screw 4 x 20 mm full thread countersunk head T-STAR plus T20 steel

Name: SPAX 1191040400203 chipboard screw 4 x 20 mm full thread countersunk head T-STAR plus T20 steel
Brand: SPAX
SKU: 03237954
Price: 0.04 EUR
Availability: InStock

Supplier number: SPAX 1191040400203 | EAN 4003530275715

0.04 tax incl.

€0.03 excl. VAT (incl. all environmental contributions)

On stock - immediately available

The minimum purchase order quantity for the product is 2000.

Ordered before 20:00 - delivered tomorrow 17/10/2026
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

Secure furniture fastenings with Spax

Practical benefits

Reliable power transfer always: The T-STAR plus T20 recess prevents slipping so you drive every fastener effortlessly without bit cam-out.
Clean flush surface finish: The countersunk multi head sinks seamlessly into your timber pieces, offering you an attractive look on dark wood.
Solid full thread grip: Designed with full threading along the 20 mm length, you achieve maximum holding power in all wooden panels.

In a nutshell

The right choise for

With the Spax 1191040400203 chipboard screw, you install black furniture hardware and indoor board materials quickly, neatly, and with full control. The t-star plus T20 drive ensures a secure bit fit to prevent slipping and cam-out while driving fasteners. Its countersunk multi head cuts flush into timber without damaging the surface and seats seamlessly against dark fittings. Featuring a 4 mm diameter, a 20 mm length, and a full thread, it delivers maximum pull-out resistance and dependable holding power in chipboard, MDF, or thin battens. The black zinc-plated steel construction provides an attractive, unobtrusive finish while protecting against indoor corrosion.

Product information FAQ

€0.04

In stock - tax incl.

Key features according to our expert

Diameter: 4 mm
Material (Screw): Steel
Surface treatment (screw): Black zinc-plated
Head shape (screw): Countersunk
type (screw head): T20
Drive type: Torx
Bolt/screw type: Full thread
Length: 20 mm

Product description

Multifunctional application indoors
Fast and reliable processing with low effort (more screws on one battery charge)
Application in decorative furniture construction when using dark/antique woods or dark furniture/metal fittings
Effectively reduces the risk of the wood splitting, even with small edge distances
Visually attractive appearance with black fittings and dark wood types
Without pre-drilling (depending on the type of wood)

The universal screw is the absolute all-rounder in the SPAX range. It can do almost anything - for example, screw into softwood such as spruce and pine completely without pre-drilling or into wooden panels such as MDF, chipboard and OSB boards. Our universal screw shows its superiority especially in interior and furniture construction, but with suitable corrosion protection it can also be used outdoors.

Thanks to its special thread geometry, the resistance when screwing is significantly lower than with conventional screws, which not only protects your muscles and nerves, but also the battery of the cordless screwdriver. Splitting of the wood close to the edges is practically completely prevented.

That means for you: You turn in more screws per battery charge and you no longer have to worry about split edges!

All Features

Diameter: 4 mm
Material (screw): Steel
Surface treatment (screw): Black zinc-plated
Head shape (screw): Countersunk
Type (screw head): T20
Drive type: Torx
Bolt/screw type: Full thread
Length: 20 mm

Brand SPAX
03237954
EAN 4003530275715
Supplier number SPAX 1191040400203

Frequently asked questions about this product

Answered by specialists

Which screwdriver bit is required for these screws?: You need a T-STAR plus T20 or standard Torx T20 bit.
What is the purpose of the full thread on this screw?: Full thread provides maximum pull-out resistance and a secure hold in thin materials or hardware fittings.
Why is the screw black zinc-plated?: The black zinc plating provides corrosion resistance indoors and a clean look when mounting dark fittings or materials.
What are the exact dimensions of this screw?: The screw has a thread diameter of 4 mm and a total length of 20 mm.
How does the countersunk multi head work?: The countersunk multi head cuts cleanly flush into wood without splitting and seats neatly into hardware fittings.