Hardened green hex head structural screws with self-drilling point and organic coating for salt spray corrosion resistance. Ideal for impact drivers. Driver bit included.
Available options and pricing for Timberfast Hex Head Structural Screw - Box 50 - GREEN, with quantity selectors and a running total
Size
SKU
Price
QTY
Total
6.7 x 65mm
TFH65G
£2.89£3.47
—
6.7 x 75mm
TFH75G
£3.39£4.07
—
6.7 x 90mm
TFH90G
£3.79£4.55
—
6.7 x 100mm
TFH100G
£3.79£4.55
—
6.7 x 125mm
TFH125G
£4.65£5.58
—
6.7 x 140mm
TFH140G
£5.85£7.02
—
6.7 x 150mm
TFH150G
£5.95£7.14
—
6.7 x 190mm
TFH190G
£8.89£10.67
—
6.7 x 200mm
TFH200G
£8.99£10.79
—
6.7 x 240mm
TFH240G
£11.98£14.38
—
6.7 x 250mm
TFH250G
£11.98£14.38
—
The Timberfast Hex Head Structural Screw comes in a box of 50 and is engineered for serious timber work. These screws feature a hardened green organic coating that resists corrosion for up to 1000 hours in salt spray conditions, making them suitable for exposed timber applications where weather resistance matters. The self-drilling point minimises the need for pilot holes, saving time on site and reducing prep work.
You get a driver bit included in every box, which means you can start driving immediately without hunting through your toolbox. The hex head design sits perfectly with impact drivers and standard hex sockets, so there’s no slipping or stripping when you’re pushing real torque through the fastener. That matters when you’re fixing structural timber or dense decking materials where you need reliability.
Timberfast Hex Head Structural Screws work best in applications where you need both speed and holding power. The hardened steel construction handles tough timber without shearing, and the organic green coating protects against UV and moisture without the brittleness of some electroplated alternatives. Whether you’re installing heavy-duty decking, constructing timber frames, or securing structural bracing, these screws deliver consistent performance across a wide range of timber densities and thicknesses.
Available in multiple sizes from 6.0mm to 10.0mm diameter, and lengths from 40mm up to 250mm, you can choose the exact specification your job requires. Order in single boxes or stock up with bulk pricing for larger projects. The compact box design stacks easily on a van or in a tool store.
Pro Tip: Always uncoil and fully extend the driver bit before first use, as bits packed tightly can bind and snap when torqued through a full impact cycle.
Timberfast Hex Head Structural Screws are the go-to fastener for decking installers, timber framers, and structural fixers across the UK. They handle everything from residential composite and hardwood decking to commercial timber cladding and structural bracing. The corrosion-resistant coating makes them ideal for coastal projects, marine environments, or anywhere moisture and salt exposure is a concern.
Roofers use them to secure timber roof bracing and structural supports, whilst landscapers rely on them for heavy-duty timber construction work. The self-drilling point cuts through both softwood and hardwood without needing pre-drilling, which speeds up installation on site and reduces material waste.
Best For
Structural timber assembly and bracing
Composite and hardwood decking
Timber cladding and exterior framing
Coastal and salt spray environments
Impact driver fastening
Compatible With
Standard hex sockets and bits
All cordless and mains impact drivers
Softwood and hardwood timber
Composite timber and engineered boards
Key Features
Self-drilling point eliminates pilot holes
Green organic coating, 1000 hrs salt spray rated
Hardened steel construction
Driver bit included per box
Multiple diameters and lengths available
Not suitable for: These screws are not designed for masonry, concrete, or metal substrates. Do not use in applications requiring stainless steel corrosion protection or marine-grade fastening where full stainless specifications are mandatory.
Position the screw at a slight angle if driving into end grain timber, as this reduces splitting risk. Ensure the driver bit is fully seated in the hex head before applying full torque. For dense hardwoods, you may still want to drill a small pilot hole despite the self-drilling point, particularly near timber edges where splitting is a concern.
Select the correct screw size and length for your timber thickness and substrate
Insert the included driver bit fully into the hex head until it clicks or seats firmly
Position the screw at the desired location, starting at a shallow angle if working near edges
Apply steady pressure and drive using an impact driver at medium-high speed
Allow the self-drilling point to penetrate the surface, then drive home to countersink the head level with the timber
If splitting occurs, stop immediately and relocate the screw slightly, or drill a small pilot hole first
Do I need to drill pilot holes before driving these screws?
The self-drilling point minimises the need for pilot holes in standard softwood and hardwood. However, if you're working near timber edges, in dense hardwoods, or in end grain, pre-drilling a small pilot hole (roughly 70% of the screw diameter) will reduce the risk of splitting.
What does the green coating protect against?
The green organic coating resists corrosion for up to 1000 hours in salt spray conditions, which covers most UK marine and coastal environments. It also provides UV protection and moisture resistance for exposed timber work. It is not a full stainless steel equivalent, so for critical marine or extreme chemical exposure, stainless fasteners should be used instead.
Timberfast Hex Head Structural Screws are manufactured from hardened steel with a green organic coating applied for corrosion resistance. The self-drilling point geometry cuts through timber efficiently whilst the hex head provides a secure socket interface for impact drivers and hex bits. Salt spray rating of 1000 hours (ISO 12944 equivalent) ensures reliable performance in coastal and moisture-exposed applications.
Diameter Range
6.0mm to 10.0mm
Length Range
40mm to 250mm
Material
Hardened steel
Coating
Green organic
Corrosion Resistance
1000 hrs salt spray
Head Type
Hex
Point Type
Self-drilling
Box Contents
50 screws plus 1 driver bit
Colour
Green
Size
6.0 x 40mm, 6.0 x 50mm, 6.7 x 125mm, 6.7 x 150mm, 6.7 x 175mm, 6.7 x 65mm, 6.7 x 75mm, 8.0 x 120mm, 10.0 x 100mm, 10.0 x 150mm, 6.0 x 75mm, 6.7 x 100mm, 6.7 x 140mm, 6.7 x 190mm, 6.7 x 200mm, 6.7 x 225mm, 6.7 x 240mm, 6.7 x 250mm, 6.7 x 60mm, 6.7 x 87mm, 6.7 x 90mm, 8.0 x 50mm, 8.0 x 75mm
Box Quantity
50
Colour
Green, Black
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