Dynatec 4.0 x 40mm Tec 4 High Performance Woodscrew Pack of 850

Description

The Dynatec 4.0 x 40mm Tec 4 High Performance Woodscrews are precision-engineered fasteners designed for civil engineering contractors and groundworkers who demand speed and dependability on site. These screws are a smart choice when working with hardwood, softwood, chipboard, plywood, MDF, OSB, and oak, delivering consistent results across a range of timber and composite materials.

These screws are ideal for heavy-duty carpentry and joinery in civil engineering projects — from timber formwork and shuttering to securing drainage runs or access covers where durable, reliable fixings are essential. The unique sawfix serrated thread reduces installation torque and speeds up fitting, helping site teams maintain efficiency without compromising on strength or finish quality.

Dimension

4.0mm diameter x 40mm length (0.16 x 1.57 inches)
Pack size: 850 screws

Material

High-grade steel with corrosion-resistant coating

Type

High performance woodscrew

Each screw features a reinforced collar and a self-cutting point for secure, split-free fixing. The self-countersinking Pozi head with reaming nibs ensures a neat, flush finish without pre-drilling. A fitting bit is included for immediate use.

Delivery Information

Core Delivery

St Albans (AL) – AL

Enfield (EN) – EN

Harrow (HA) – HA

Hemel Hempstead (HP) – HP

Luton (LU) – LU

North London (N) – N

North West London (NW) – NW

Stevenage (SG) – SG

Slough (SL) – SL

Uxbridge (UB) – UB

Watford (WD) – WD

Extended Delivery

EC – Central London KT – Kingston SM – Sutton TW – Twickenham W – West London WC – West Central

Croydon (CR)
CR0 • CR4 • CR7

Cambridge (CB)
CB6 • CB7 • CB8 • CB10 • CB11 • CB22 • CB23

Chelmsford (CM)
CM16 • CM17 • CM18 • CM19 • CM20 • CM21 • CM22 • CM23 • CM24

Ipswich (IP)
IP7 • IP14 • IP21 • IP22 • IP23 • IP24 • IP25 • IP26 • IP27 • IP28 • IP29 • IP30 • IP31 • IP33

Milton Keynes (MK)
MK1 • MK2 • MK3 • MK4 • MK5 • MK6 • MK7 • MK17 • MK18 • MK41 • MK43 • MK44 • MK45

Peterborough (PE)
PE7 • PE8 • PE15 • PE16 • PE19 • PE26 • PE27 • PE28 • PE29

South West London (SW)
SW3 • SW5 • SW6 • SW7 • SW10

Delivery	Fee	Order Value
Core	£25	£100 – £749.99
Extended	£25	£250 – £749.99
Free Delivery	£0	£750+

Minimum order: £100 for Core Delivery & £250 for Extended Delivery.

Returning An Item

At Halcyon Timber, we strive to provide the highest level of customer satisfaction. If for any reason you are not fully satisfied with your purchase, we offer a straightforward return policy.

To initiate a return, please provide proof of purchase (such as a till receipt or order confirmation email) and ensure that the product is returned in the same condition it was delivered in—clean, dry, undamaged, and in its original packaging.

Returns must be made within 30 days from the date of purchase or receipt of the product, whichever is later.

Please send all returns to:

HALCYON TIMBER
2 WARRENWOOD INDUSTRIAL ESTATE
HERTFORD SG14 3NU

Please note that all returns are subject to a 20% restocking charge. This policy covers the costs associated with restocking and processing returned items.

We thank you for your business and hope that you are completely satisfied with your Halcyon Timber purchase. If you have any questions or concerns regarding our return policy, please do not hesitate to contact us. Our customer service team is always ready to assist you.

Getting A Refund

To obtain a refund, all goods within an order must be returned to Halcyon Timber in good condition before the refund will be processed. Goods must be returned in the same condition they were delivered in—clean, dry, and undamaged.

Please note that a 20% restocking charge applies to all returns.

All refunds will be credited to the original payment card used to make the order. Refunds take 3-5 working days to process; the time it takes to appear in your account depends on your bank’s processing time.