What screwdriver bit size is required for these screws?

You need a T20 bit (T-STAR plus T20) to ensure optimal torque transfer and a secure fit.

Are these screws suitable for outdoor applications?

Yes, the A2 stainless steel construction provides reliable protection against rust and corrosion.

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

Pre-drilling is usually not required in softwoods thanks to the 4CUT point, though it remains recommended in hardwoods.

What is the main advantage of the full thread design?

The full thread provides high tensile and holding strength across the entire 30 mm length, ideal for timber fittings.

SPAX 1197000400303 chipboard screw 4 x 30 mm full thread countersunk head T-STAR plus T20 stainless steel A2

Name: SPAX 1197000400303 chipboard screw 4 x 30 mm full thread countersunk head T-STAR plus T20 stainless steel A2
Brand: SPAX
SKU: 02533158
Price: 0.08 EUR
Availability: InStock

Supplier number: SPAX 1197000400303 | EAN

0.08 tax incl.

€0.07 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 10/11/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL
Delivered from Belgium

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Weatherproof fastening with Spax

Practical benefits

Reliable outdoor corrosion protection: High-grade A2 stainless steel ensures your outdoor installations stay securely fastened without the danger of rusting.
Secure bit engagement control: The T-STAR plus T20 drive system eliminates bit slipping to deliver smooth, high-torque power transfer.
Clean and flush finish: The countersunk multi-head pulls neatly into the wood surface without requiring any extra countersinking work.

In a nutshell

The right choise for

With the Spax chipboard screw 1197000400303, you create secure and long-lasting timber connections in outdoor areas and damp indoor environments. Crafted from A2 stainless steel, this 4 x 30 mm screw delivers dependable corrosion resistance against the elements. Its full thread design provides high holding strength across the entire length, ensuring firm fastening in chipboard, MDF, and solid wood. The t-star plus T20 drive system eliminates bit slippage, ensuring smooth and controlled torque transfer while driving. Thanks to the countersunk multi-head, the screw pulls flush into the wood surface without requiring separate countersinking. This 200-piece pack is ideal for garden furniture, fittings, and facade cladding.

Product information FAQ

€0.08

In stock - tax incl.

Key features according to our expert

Diameter: 4 mm
Material (screw): Stainless steel
Surface treatment (screw): Bright
Head shape (screw): Countersunk
type (screw head): T20
Drive type: Torx
Bolt/screw type: Full thread
Length (thread): 25 mm
Length: 30 mm

Product description:

Flat countersunk head, T-STAR plus
With MULTI Head and 4CUT, synthetic coating
Stainless steel A2 II

Application:

Outdoor applications - Direct exposure to elements

Advantage:

In the long term, galvanised protective coatings frequently do not sufficiently protect steel screws against corrosion in outdoor areas. Rust is not just ugly but also expensive. In particular, if the quality of expensive products or components deteriorates and results in consequential damage.Costly reworks and repairs become necessary. Rust can be avoided. The SPAX rust-free stainless steel offers protection against corrosion.

Special properties:

Stainless steel A2 II: high corrosion protection
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: 4 mm
Material (screw): Stainless steel
Surface treatment (screw): Bright
Head shape (screw): Countersunk
Type (screw head): T20
Drive type: Torx
Bolt/screw type: Full thread
Length (thread): 25 mm
Length: 30 mm
Wire length: 25 mm

Brand SPAX
02533158
EAN
Supplier number SPAX 1197000400303

Frequently asked questions about this product

Answered by specialists

What screwdriver bit size is required for these screws?: You need a T20 bit (T-STAR plus T20) to ensure optimal torque transfer and a secure fit.
Are these screws suitable for outdoor applications?: Yes, the A2 stainless steel construction provides reliable protection against rust and corrosion.
Do you need to pre-drill before driving these screws?: Pre-drilling is usually not required in softwoods thanks to the 4CUT point, though it remains recommended in hardwoods.
What is the main advantage of the full thread design?: The full thread provides high tensile and holding strength across the entire 30 mm length, ideal for timber fittings.