SPAX 0151010400203 rear wall screw 4 x 20 mm full thread Flat head T-STAR plus T20 steel

Name: SPAX 0151010400203 rear wall screw 4 x 20 mm full thread Flat head T-STAR plus T20 steel
Brand: SPAX
SKU: 03198038
Price: 0.05 EUR
Availability: InStock

Supplier number: SPAX 0151010400203 | EAN

0.05 tax incl.

€0.04 excl. VAT (incl. all environmental contributions)

On stock - immediately available

The minimum purchase order quantity for the product is 300.

Ordered before 20:00 - delivered tomorrow 30/09/2026
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 holding with the back panel screw

Practical benefits

Flat head prevents tearing: The wide flange head distributes pressure across thin boards so you secure rear panels cleanly without surface damage.
Precise drive with T20: The T20 drive prevents bit slippage and gives you optimal torque transfer during fast assembly.
Strong hold with full thread: The continuous full thread ensures high pull-out resistance across the entire 20 mm screw length.

In a nutshell

The right choise for

With the Spax back panel screw, you can mount rear panels to cabinets and furniture frames securely and cleanly. The wide, flat flange head distributes clamping pressure evenly across thin hardboard or mdf boards, preventing pull-through and tear-out without needing separate washers. a continuous full thread along the entire 20 mm length delivers high pull-out resistance directly in the furniture carcass. The t-star plus T20 drive system prevents bit slippage and guarantees direct, controlled torque transfer. Finished with the corrosion-resistant wirox coating, this fastener ensures fast, reliable results for all your bespoke furniture and cabinetry jobs.

Product information FAQ

€0.05

In stock - tax incl.

Key features according to our expert

Diameter: 4 mm
Material (Screw): Steel
Surface treatment screw: Wirox
Head shape (screw): Flange
type (screw head): T20
Drive type: Torx
Bolt/screw type: Full thread
Length: 20 mm

Product description

The back panel can be removed and reattached more easily and without damage,-e.g. when moving house
The large screw head increases contact pressure
Disc head without lens (the screw does not protrude)
Simple, gap-free connection
No pre-drilling required
Higher pull-out resistance than a nail

The universal screw is the absolute all-rounder in SPAX's 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 reliably prevented.

For you, this means: 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: Wirox
Head shape (screw): Flange
Type (screw head): T20
Drive type: Torx
Bolt/screw type: Full thread
Length: 20 mm
Wire length: 18 mm

Brand SPAX
03198038
EAN
Supplier number SPAX 0151010400203

Frequently asked questions about this product

Answered by specialists

What is this rear panel screw used for?: It is designed for securing thin hardboard and MDF back panels to cabinets and furniture frames without pull-through.
Which driver bit do you need?: You need a T20 bit with T-STAR plus drive for optimal torque transmission and a secure fit.
What is the benefit of the flat flange head?: The wide, flat head distributes clamping pressure across a larger surface area to prevent damage to thin rear panels.
What are the advantages of the WIROX coating?: The WIROX finish provides significantly higher corrosion resistance than standard zinc plating and is free of chrome(VI).
Do you need to pre-drill before fastening?: Pre-drilling is generally not required when working with standard furniture boards and softwoods.