Which screwdriver bit is required for this Spax screw?

Use a T-STAR plus T20 bit for optimal grip and force transmission.

What are the benefits of the Wirox coating?

The Wirox surface treatment provides significantly higher corrosion resistance than standard zinc plating.

Is pre-drilling required before driving this screw into wood?

Pre-drilling is not required in most softwoods. It remains recommended for dense hardwoods.

What is the purpose of a full-thread screw?

A full thread delivers maximum holding power and grip across the entire embedded length.

What is the advantage of the countersunk multi-head?

The countersunk head sinks cleanly flush with the timber surface without requiring separate countersinking.

SPAX 1191010400405 chipboard screw 4 x 40 mm full thread countersunk head T-STAR plus T20 steel

Name: SPAX 1191010400405 chipboard screw 4 x 40 mm full thread countersunk head T-STAR plus T20 steel
Brand: SPAX
SKU: 02338429
Price: 0.04 EUR
Availability: InStock

Supplier number: SPAX 1191010400405 | EAN 4003530107863

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 1000.

Delivery by DHL

✆ Talk to a specialist

Reliable timber fastening with Spax screws

Practical benefits

Maximum torque transfer efficiency: The T-STAR plus recess holds the T20 bit securely, preventing cam-out and ensuring you work smoothly under pressure.
Clean and flush finish: The countersunk multi head pulls smoothly into the wood surface without tearing the material for a neat appearance.
Superior resistance to corrosion: The advanced WIROX coating delivers enhanced protection over standard zinc plating for dependable indoor and sheltered outdoor assemblies.

In a nutshell

The right choise for

With Spax 4 x 40 mm universal screws, you achieve solid and clean timber joints effortlessly across all your interior projects. The T-Star plus T20 drive ensures optimal torque transmission and a secure bit fit, preventing slipping and cam-out while driving. Thanks to the countersunk multi head, the screw sinks cleanly flush into the wood surface without the need for pre-drilling or separate countersinking. In addition, the full thread delivers maximum holding power and pull-out resistance across the entire length. With its innovative Wirox coating, the steel screw offers significantly higher corrosion resistance than standard zinc plating, making it dependable for furniture assembly and general joinery.

Product information FAQ

€0.04

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: 35 mm
Length: 40 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: 35 mm
Length: 40 mm
Wire length: 35 mm

Brand SPAX
02338429
EAN 4003530107863
Supplier number SPAX 1191010400405

Frequently asked questions about this product

Answered by specialists

Which screwdriver bit is required for this Spax screw?: Use a T-STAR plus T20 bit for optimal grip and force transmission.
What are the benefits of the Wirox coating?: The Wirox surface treatment provides significantly higher corrosion resistance than standard zinc plating.
Is pre-drilling required before driving this screw into wood?: Pre-drilling is not required in most softwoods. It remains recommended for dense hardwoods.
What is the purpose of a full-thread screw?: A full thread delivers maximum holding power and grip across the entire embedded length.
What is the advantage of the countersunk multi-head?: The countersunk head sinks cleanly flush with the timber surface without requiring separate countersinking.