10Gx65 Modwood Timber Decking Screw 305SS
From $74.15 each, Inc. GST
10Gx65 Modwood Timber Decking Screws in 305 stainless steel are purpose-built for fixing Modwood composite decking boards to timber substructures.
Benefits of 10Gx65 Modwood Timber Screws
- Type 17 auger tip & tri-lobar shank for powerful penetration through dense materials
- Reduced cam-out during installation due to extra deep star drive recess
- Reverse thread prevents mushrooming on the board surface
- Versatile – can be used alongside Modwood hidden fixing systems
Engineered with the demanding properties of composite decking in mind, these screws are designed to drive cleanly, sit flush and hold firm. Available in matching colours to complement your Modwood composite deck and sold in packs of x100.
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Description
10Gx65 Modwood Timber Decking Screw 305SS is the recommended fastener for attaching Modwood composite decking boards to timber substructures. Every design feature is there for a reason: the Type 17 auger tip is sized for decking up to 25mm, the tri-lobar shank and acute thread angle give you the driving power needed to push through harder composite materials cleanly, and the reverse thread stops the board surface from mushrooming around the screw head.
Key Features of Modwood Timber Screws
- Type 17 auger tip designed for composite decking up to 25mm attached to timber substructures
- Tri-lobar shank & acute thread angle for increased driving power and cleaner penetration
- Extra deep star drive recess minimises cam-out
- Reverse thread prevents mushrooming at the board surface
- 305 stainless steel — approved for use with ACQ treated timber
Why choose the 305SS Modwood Timber Decking Screws?
Most decking screws are designed with timber in mind but composite decking is a different beast. The denser material needs a fastener that can handle the resistance without cracking the board, dragging the surface or backing out over time. The 305SS screw is engineered specifically for Modwood composite decking, so every mechanical feature works with the material rather than against it.
Pre-drill with a 4.8mm bit before installation, and use the Modwood Deck Screw Depth Setter to keep every head sitting flush. For installations exposed to salt air, near large bodies of salt water, swimming pools or other high-corrosion environments, upgrade to the Modwood 316 stainless steel screws.
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FAQs
What is this screw designed for?
These screws are specifically designed for attaching Modwood composite decking boards to timber substructures. They're suitable for starter boards, end boards, steps, screening and fascia applications.
Do I need to pre-drill before installing these screws?
Yes — you must pre-drill the decking boards before installing these fasteners. Use a 4.8mm drill bit or the Modwood Deck Screw Depth Setter. For dense hardwood substructures, it's also worth pre-drilling the framing to make driving easier and cleaner.
How do I make sure the screw head sits flush every time?
The Modwood Deck Screw Depth Setter is the easiest way to get a consistent flush finish. It takes the guesswork out of seating depth and is a worthwhile addition if you're installing a full deck.
Can I use these screws with ACQ treated timber?
Yes. The 305 stainless steel construction is approved for use with ACQ treated timber framing.
Are these screws suitable for poolside or coastal installations?
Not ideally. The 305SS grade offers good general corrosion resistance, but for installations exposed to salt air, near large bodies of salt water or around swimming pools, you should upgrade to Modwood 316 stainless steel screws, which offer a higher level of corrosion resistance in those environments.
What is the function of a Type 17 auger tip on a decking screw?
The Type 17 auger tip is designed to bore cleanly through composite decking material up to 25mm, reducing the resistance you'd otherwise encounter driving into a denser material.
Why do these screws have a tri-lobar shank?
The tri-lobar shank reduces friction as the screw drives through the decking material, which means less heat build-up, cleaner penetration and less effort overall . It's particularly useful when working with harder composite boards like Modwood Xtreme Guard decking.
What drive type do these screws use?
These screws feature an extra deep star drive recess. A quality star drive bit is recommended for best results.
Can I use these screws with other composite decking brands?
These screws are engineered specifically for Modwood decking on timber substructures. For other composite brands, check the relevant installation guidelines to confirm the appropriate fastener.
What thickness of decking are these screws suited to?
The 65mm length and Type 17 auger tip are sized for composite decking up to 25mm attached to timber substructures — which covers Modwood decking 137x23 and 88x23 board profiles.
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- Next business day delivery on stocked lines when you order before 2pm*
- Delivery costs calculated at checkout
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- Next business day collection is available on most in-stock items*
- Bring a suitable vehicle and the equipment needed to secure your load
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- Need to delay collection? Just let us know
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