Which screwdriver bit is required for these screws?

You need a T15 bit, preferably T-STAR plus for optimal grip and maximum power transmission.

Are these screws suitable for outdoor use?

Yes, the A2 stainless steel construction provides reliable protection against weather and moisture.

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

Pre-drilling is generally not required in softwoods, but it is recommended when working with hardwoods.

What are the exact dimensions of this screw?

This screw has a 3.5 mm diameter, a total length of 20 mm, and a 16 mm full thread length.

What is the purpose of the multi head?

It countersinks flush into wood and stops cleanly on metal hardware without causing damage.

SPAX 1197000350203 chipboard screw 3.5 x 20 mm full thread countersunk head T-STAR plus T15 stainless steel A2

Name: SPAX 1197000350203 chipboard screw 3.5 x 20 mm full thread countersunk head T-STAR plus T15 stainless steel A2
Brand: SPAX
SKU: 02685317
Price: 0.06 EUR
Availability: InStock

Supplier number: SPAX 1197000350203 | EAN 4003530156069

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 200.

Ordered before 20:00 - delivered as of 16/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL

✆ Talk to a specialist

Durable outdoor fastening by Spax

Practical benefits

Reliable protection against corrosion: Made from A2 stainless steel, it allows you to fasten outdoor timber without rusting.
Secure bit engagement throughout: The T-STAR plus T15 drive prevents cam-out and ensures you transfer maximum torque effortlessly.
Flush and clean finish: The countersunk head sinks cleanly into the timber so you get a smooth surface.

In a nutshell

The right choise for

With the Spax chipboard screw, you create dependable timber joints built to withstand moisture and changing weather. Made from A2 stainless steel, it is ideal for outdoor furniture, hardware installation, and damp indoor environments without any risk of corrosion. The t-star plus T15 drive delivers a secure bit fit to eliminate cam-out, giving you full control and smooth torque transfer while fastening. Its countersunk multi head cuts neatly into the wood for a flush, splinter-free finish, while the full-thread design ensures strong holding power in materials like mdf and chipboard. You get clean, long-lasting assemblies done right the first time.

Product information FAQ

€0.06

In stock - tax incl.

Key features according to our expert

Diameter: 3,5 mm
Material (screw): Stainless steel
Surface treatment (screw): Bright
Head shape (screw): Countersunk
type (screw head): T15
Drive type: Torx
Bolt/screw type: Full thread
Thread length: 16 mm
Length: 20 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: 3,5 mm
Material (screw): Stainless steel
Surface treatment (screw): Bright
Head shape (screw): Countersunk
Type (screw head): T15
Drive type: Torx
Bolt/screw type: Full thread
Thread length: 16 mm
Length: 20 mm
Wire length: 16 mm

Brand SPAX
02685317
EAN 4003530156069
Supplier number SPAX 1197000350203

Frequently asked questions about this product

Answered by specialists

Which screwdriver bit is required for these screws?: You need a T15 bit, preferably T-STAR plus for optimal grip and maximum power transmission.
Are these screws suitable for outdoor use?: Yes, the A2 stainless steel construction provides reliable protection against weather and moisture.
Do you need to pre-drill before driving these screws?: Pre-drilling is generally not required in softwoods, but it is recommended when working with hardwoods.
What are the exact dimensions of this screw?: This screw has a 3.5 mm diameter, a total length of 20 mm, and a 16 mm full thread length.
What is the purpose of the multi head?: It countersinks flush into wood and stops cleanly on metal hardware without causing damage.