4.0 x 40mm Timber Screws & 50mm Washers

Description

The Tekwarm UFH Timber Woodscrew and Washer Kit gives a secure fixing for Tekwarm 20mm UFH boards into timber, chipboard, MDF and composite substrates. Each box holds 100 Woodmaster 4.0 x 40mm Pozi double countersunk screws and 100 matching 50mm washers (stress plates), 200 components in total.

The reduced tip drill point lets you fix directly, with no pilot hole, while the double countersunk head with nibs sits flush with the board surface. The 50mm stress plate spreads the load and protects the 20mm board.

4.0 x 40mm

Woodmaster screw

50mm

Washer / stress plate

100 + 100

Screws and washers

20mm

Board thickness

No pilot

Hole required

5 minimum

Fixings per 1200 x 600mm board

Use the correct screw for the substrate

This kit is for timber, chipboard, MDF and composite substrates. For concrete, screed or masonry, use the Tekwarm masonry screw and washer kit, which needs a 4.35mm pilot hole. Keep surfaces clean and free from dust before fixing.

For Tekwarm 20mm boards only

The kit is made for Tekwarm 20mm UFH boards. Use at least 5 screws and washers per 1200 x 600mm board, and always fit the stress plate under the screw head.

No pilot hole needed

The reduced tip drill point allows direct fixing without a pilot hole into timber, speeding up board fixing.

Key features

Woodmaster Pozi screw

4.0 x 40mm, fully threaded with a Pozi No. 2 drive for secure fixing.

Flush double countersunk head

Double countersunk head with nibs sits flush with the board surface.

Reduced tip drill point

Fix directly without a pilot hole into timber, chipboard, MDF and composite.

Corrosion resistant finish

Electroplated zinc with di-chromate passivation, minimum 12 microns, on C1002 carbon steel.

50mm stress plates

100 steel washers distribute load evenly and prevent damage to the 20mm board.

Complete kit

100 screws plus 100 washers in one box, matched to Tekwarm 20mm boards.

Technical specification

Pack contents

Brand

Tekwarm

Manufacturer part number

PR011841

Screws

100 x 4.0 x 40mm Woodmaster Pozi

Washers

100 x 50mm stress plates

Total components

200

Woodmaster screw

Size

4.0 x 40.0mm, fully threaded

Head

Double countersunk with nibs, sits flush

Drive

Pozi No. 2

Drill point

Reduced tip

Material

Carbon steel (C1002 grade)

Coating

Electroplated zinc with di-chromate passivation, minimum 12 microns

Application

Timber, chipboard, MDF and composite substrates

Stress plate / washer

Size

50mm

Material

Steel

Function

Distributes screw load evenly, preventing damage to the 20mm board

Installation

Pilot hole

Not required; reduced tip allows direct fixing

Fixings per board

At least 5 per 1200 x 600mm board

Surface

Clean and free from dust before fixing

Board

Tekwarm 20mm UFH boards

Frequently asked questions

What is in the box?

The box holds 100 Woodmaster 4.0 x 40mm screws and 100 matching 50mm washers (stress plates), 200 components in total.

Do I need a pilot hole?

No. The reduced tip drill point allows direct fixing without a pilot hole into timber. Keep the surface clean and free from dust.

How many fixings per board?

Use at least 5 screws and washers per 1200 x 600mm board. A box of 100 therefore fixes at least 20 boards (about 14.4 m²).

Which substrates is it for?

It is for fixing into timber, chipboard, MDF and composite substrates. For concrete, screed or masonry, use the Tekwarm masonry kit with a pilot hole.

Why do I need the stress plate?

The plate distributes the load and prevents damage to the 20mm board, so the board is not pulled over the screw head.

What drive does the screw use?

It has a Pozi No. 2 drive with a double countersunk head with nibs so it sits flush with the board.

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