Which screwdriver bit is required for these screws?

You need a T-STAR plus or standard Torx T20 bit for optimal grip and power transmission.

Are these screws suitable for outdoor use?

Yes, made of A2 stainless steel, they provide excellent resistance to rust and weathering.

Do you need to pre-drill into wood?

Pre-drilling is generally not required in softwoods thanks to the 4CUT point.

What is the purpose of a full thread?

A full thread provides high tensile strength and a firm hold throughout the entire screw length.

Does the screw head sit flush with the surface?

Yes, the countersunk multi-head countersinks neatly to sit flush with the wood surface.

SPAX 1197000450403 chipboard screw 4.5 x 40 mm full thread countersunk head T-STAR plus T20 stainless steel A2

Name: SPAX 1197000450403 chipboard screw 4.5 x 40 mm full thread countersunk head T-STAR plus T20 stainless steel A2
Brand: SPAX
SKU: 03204978
Price: 0.12 EUR
Availability: InStock

Supplier number: SPAX 1197000450403 | EAN

0.12 tax incl.

€0.10 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 tomorrow 13/10/2026
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

Reliable timber fastening with Spax

Practical benefits

Secure drive with no slipping: The T-STAR plus recess ensures optimal bit engagement and smooth power transfer while you drive.
Superior outdoor corrosion protection: High-grade A2 stainless steel keeps your fasteners protected against rust in exposed exterior projects.
Clean flush countersunk finish: The multi head countersinks smoothly into timber so you achieve a neat and even surface.

In a nutshell

The right choise for

With these Spax chipboard screws, you create strong and durable timber connections for outdoor projects and damp areas. High-grade A2 stainless steel provides dependable protection against rust and harsh weather conditions. The t-star plus T20 drive ensures optimal torque transmission and a secure bit fit to prevent slipping during installation. Thanks to the countersunk multi head, the screw seats cleanly and flush into the wood surface without protruding edges. Furthermore, the full thread design across the 40 mm length delivers high pull-out resistance and maximum holding power in timber and board materials.

Product information FAQ

€0.12

In stock - tax incl.

Key features according to our expert

Diameter: 4,5 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: 40 mm

Product description

stainless steel screw, 4.5 x 40 mm, full thread, flat head, T-STAR plus T20, 4CUT, stainless steel A2

Characteristics

Use: Outdoor applications - immediately weathered
SPAX stainless steel protects against corrosion!

All Features

Diameter: 4,5 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: 40 mm
Wire length: 34 mm

Brand SPAX
03204978
EAN
Supplier number SPAX 1197000450403

Frequently asked questions about this product

Answered by specialists

Which screwdriver bit is required for these screws?: You need a T-STAR plus or standard Torx T20 bit for optimal grip and power transmission.
Are these screws suitable for outdoor use?: Yes, made of A2 stainless steel, they provide excellent resistance to rust and weathering.
Do you need to pre-drill into wood?: Pre-drilling is generally not required in softwoods thanks to the 4CUT point.
What is the purpose of a full thread?: A full thread provides high tensile strength and a firm hold throughout the entire screw length.
Does the screw head sit flush with the surface?: Yes, the countersunk multi-head countersinks neatly to sit flush with the wood surface.