Decking Accessories & Screws

WPC clips are essential for installing WPC decking as they enable a concealed fastening system, creating a clean and seamless appearance without visible screws or nails on the surface. They allow for uniform spacing between boards while ensuring a secure and stable connection.

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Otter Deck Spacers (Pack of 3) are designed to help you achieve perfectly consistent gaps between decking boards on both residential and commercial projects, ensuring a professional, uniform finish every time.

Key Features

• Application suitability – Ideal for timber and composite decking in residential backyards, patios, and light commercial decks.
• Function – Precisely maintains even spacing between boards for accurate alignment and clean, straight deck lines.
• Material – Manufactured from robust, high-quality plastic that resists warping, swelling, and moisture damage.
• Ease of use – Simple to position between boards and remove, making them suitable for both DIY users and professionals.
• Results – Delivers consistent gaps that improve drainage, airflow, and the overall appearance of the finished deck.
• Durability – Tough construction allows repeated use across multiple decking projects without loss of shape.
• Pack contents – Supplied as a convenient pack of 3 spacers, providing ample support for efficient board installation.

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Unique and stylish finish for your decking and cladding with steel substructures.

Advantages

• 316 stainless steel with additional zinc-coated steel tip offers a high degree of weather resistance
• The self-drilling tip makes installation quick and easy
• Small head diameter ensures the head can sink in cleanly and easily
• Timber is protected from tearing or splitting by the drill tip
• Smooth head for a perfect barefoot-proof finish

Functioning

• SIT® drive (TX compatible) — Optimum torque transmission, a tight and snug fit, and fast centering.
• High-efficiency thread — Anti-friction coating reduces drive-in torque.
• Aggressive drilling tip with wings — Cuts a clearance hole for decks with a steel under-construction. Quick, easy and safe work without pre-drilling for steel thickness 1.25–3.0 mm.
• 316 stainless steel with zinc-coated tip — High corrosion and weather resistance, increased fracture torque, suitable for outdoor use and close-to-water applications.

Instructions for Use

• Drive in the fastener at high to maximum speed using a cordless or electric drill.
• As soon as you hit the metal substructure, reduce speed and increase the pressure slightly.
• Do not overdrive — stop as soon as the screw head is level with the surface.
• Only use a drill driver (cordless or corded). Do not use an impact driver.

Applications

• Decking and cladding to steel substructures

Building Materials

• Merbau
• Spotted Gum
• Blackbutt
• Tallowwood
• Stringybark
• Karri
• Sydney Bluegum
• Jarrah
• Ironbark
• Tasmanian Oak
• Victorian Ash
• Grey Box
• Oak

Unique and stylish finish for your fencing, screening and cladding with steel substructures.

Advantages

• Carbon steel screw with Delta®-Seal coating for better corrosion protection
• Suitable for fencing
• Not suitable for use around pools, close to the waterline, or in aggressive environments or areas with extreme UV exposure (for those applications, consider our stainless 316/bimetal screws)
• The self-drilling tip makes installation quick and easy
• Small head diameter ensures the head can sink in cleanly and easily
• Timber is protected from tearing or splitting by the drill tip
• Smooth head for a perfect finish — no need to sand timber after installation
• Available in silver, brown and black finishes

Functioning

• SIT® drive (TX compatible) — Optimum torque transmission, a tight and snug fit, and fast centering.
• High-efficiency thread — Anti-friction coating reduces drive-in torque.
• Aggressive drilling tip with wings — Cuts a clearance hole for timber and through the steel frame. Quick, easy and safe work without pre-drilling for steel thickness 1.25–3.0 mm.
• Delta®-Seal coating — High corrosion and weather resistance, increased fracture torque, and suitable for outdoor use where stainless steel is not required.

Not suitable for use around pools, close to the waterline, or in aggressive environments or areas with extreme UV exposure. For those applications, consider our stainless 316/bimetal screws.

Instructions for Use

• Drive in the fastener at high to maximum speed using a cordless or electric drill.
• As soon as you hit the metal substructure, reduce speed and increase the pressure slightly.
• Do not overdrive — stop as soon as the screw head is level with the surface.
• Only use a drill driver (cordless or corded). Do not use an impact driver.

Applications

• Fencing

Building Materials

• Merbau
• Spotted Gum
• Blackbutt
• Tallowwood
• Stringybark
• Karri
• Sydney Bluegum
• Jarrah
• Ironbark
• Tasmanian Oak
• Victorian Ash
• Grey Box
• Oak

Tip

Protection: Harsh chemical cleaners for timber may damage the screw surface. Please wash any residue off immediately for longer enjoyment.

Note: Delta®-Seal coating is not suitable for areas subject to sea water, salt-chlorinated pools, harsh or aggressive environments (including cleaners), or extreme UV exposure. For these applications, please see our 316 stainless steel alternative.

Unique and stylish finish for your fencing, screening and cladding with steel substructures.

Advantages

• Carbon steel screw with Delta®-Seal coating for better corrosion protection
• Suitable for fencing
• Not suitable for use around pools, close to the waterline, or in aggressive environments or areas with extreme UV exposure (for those applications, consider our stainless 316/bimetal screws)
• The self-drilling tip makes installation quick and easy
• Small head diameter ensures the head can sink in cleanly and easily
• Timber is protected from tearing or splitting by the drill tip
• Smooth head for a perfect finish — no need to sand timber after installation
• Available in silver, brown and black finishes

Functioning

• SIT® drive (TX compatible) — Optimum torque transmission, a tight and snug fit, and fast centering.
• High-efficiency thread — Anti-friction coating reduces drive-in torque.
• Aggressive drilling tip with wings — Cuts a clearance hole for timber and through the steel frame. Quick, easy and safe work without pre-drilling for steel thickness 1.25–3.0 mm.
• Delta®-Seal coating — High corrosion and weather resistance, increased fracture torque, and suitable for outdoor use where stainless steel is not required.

Not suitable for use around pools, close to the waterline, or in aggressive environments or areas with extreme UV exposure. For those applications, consider our stainless 316/bimetal screws.

Instructions for Use

• Drive in the fastener at high to maximum speed using a cordless or electric drill.
• As soon as you hit the metal substructure, reduce speed and increase the pressure slightly.
• Do not overdrive — stop as soon as the screw head is level with the surface.
• Only use a drill driver (cordless or corded). Do not use an impact driver.

Applications

• Fencing

Building Materials

• Merbau
• Spotted Gum
• Blackbutt
• Tallowwood
• Stringybark
• Karri
• Sydney Bluegum
• Jarrah
• Ironbark
• Tasmanian Oak
• Victorian Ash
• Grey Box
• Oak

Tip

Protection: Harsh chemical cleaners for timber may damage the screw surface. Please wash any residue off immediately for longer enjoyment.

Note: Delta®-Seal coating is not suitable for areas subject to sea water, salt-chlorinated pools, harsh or aggressive environments (including cleaners), or extreme UV exposure. For these applications, please see our 316 stainless steel alternative.

Unique and stylish finish for your fencing, screening and cladding with steel substructures.

Advantages

• Carbon steel screw with Delta®-Seal coating for better corrosion protection
• Suitable for fencing
• Not suitable for use around pools, close to the waterline, or in aggressive environments or areas with extreme UV exposure (for those applications, consider our stainless 316/bimetal screws)
• The self-drilling tip makes installation quick and easy
• Small head diameter ensures the head can sink in cleanly and easily
• Timber is protected from tearing or splitting by the drill tip
• Smooth head for a perfect finish — no need to sand timber after installation
• Available in silver, brown and black finishes

Functioning

• SIT® drive (TX compatible) — Optimum torque transmission, a tight and snug fit, and fast centering.
• High-efficiency thread — Anti-friction coating reduces drive-in torque.
• Aggressive drilling tip with wings — Cuts a clearance hole for timber and through the steel frame. Quick, easy and safe work without pre-drilling for steel thickness 1.25–3.0 mm.
• Delta®-Seal coating — High corrosion and weather resistance, increased fracture torque, and suitable for outdoor use where stainless steel is not required.

Not suitable for use around pools, close to the waterline, or in aggressive environments or areas with extreme UV exposure. For those applications, consider our stainless 316/bimetal screws.

Instructions for Use

• Drive in the fastener at high to maximum speed using a cordless or electric drill.
• As soon as you hit the metal substructure, reduce speed and increase the pressure slightly.
• Do not overdrive — stop as soon as the screw head is level with the surface.
• Only use a drill driver (cordless or corded). Do not use an impact driver.

Applications

• Fencing

Building Materials

• Merbau
• Spotted Gum
• Blackbutt
• Tallowwood
• Stringybark
• Karri
• Sydney Bluegum
• Jarrah
• Ironbark
• Tasmanian Oak
• Victorian Ash
• Grey Box
• Oak

Tip

Protection: Harsh chemical cleaners for timber may damage the screw surface. Please wash any residue off immediately for longer enjoyment.

Note: Delta®-Seal coating is not suitable for areas subject to sea water, salt-chlorinated pools, harsh or aggressive environments (including cleaners), or extreme UV exposure. For these applications, please see our 316 stainless steel alternative.

Unique and stylish finish for your fencing, screening and cladding with steel substructures.

Advantages

• Carbon steel screw with Delta®-Seal coating for better corrosion protection
• Suitable for fencing
• Not suitable for use around pools, close to the waterline, or in aggressive environments or areas with extreme UV exposure (for those applications, consider our stainless 316/bimetal screws)
• The self-drilling tip makes installation quick and easy
• Small head diameter ensures the head can sink in cleanly and easily
• Timber is protected from tearing or splitting by the drill tip
• Smooth head for a perfect finish — no need to sand timber after installation
• Available in silver, brown and black finishes

Functioning

• SIT® drive (TX compatible) — Optimum torque transmission, a tight and snug fit, and fast centering.
• High-efficiency thread — Anti-friction coating reduces drive-in torque.
• Aggressive drilling tip with wings — Cuts a clearance hole for timber and through the steel frame. Quick, easy and safe work without pre-drilling for steel thickness 1.25–3.0 mm.
• Delta®-Seal coating — High corrosion and weather resistance, increased fracture torque, and suitable for outdoor use where stainless steel is not required.

Not suitable for use around pools, close to the waterline, or in aggressive environments or areas with extreme UV exposure. For those applications, consider our stainless 316/bimetal screws.

Instructions for Use

• Drive in the fastener at high to maximum speed using a cordless or electric drill.
• As soon as you hit the metal substructure, reduce speed and increase the pressure slightly.
• Do not overdrive — stop as soon as the screw head is level with the surface.
• Only use a drill driver (cordless or corded). Do not use an impact driver.

Applications

• Fencing

Building Materials

• Merbau
• Spotted Gum
• Blackbutt
• Tallowwood
• Stringybark
• Karri
• Sydney Bluegum
• Jarrah
• Ironbark
• Tasmanian Oak
• Victorian Ash
• Grey Box
• Oak

Tip

Protection: Harsh chemical cleaners for timber may damage the screw surface. Please wash any residue off immediately for longer enjoyment.

Note: Delta®-Seal coating is not suitable for areas subject to sea water, salt-chlorinated pools, harsh or aggressive environments (including cleaners), or extreme UV exposure. For these applications, please see our 316 stainless steel alternative.

Perfect for hardwood to softwood under-constructions.

Advantages

• Offers a high degree of weather resistance.
• The self-drilling tip makes installation quick and easy.
• Small head diameter and underhead pockets ensure the head can sink cleanly and easily.
• Timber is protected from tearing or splitting by the drill tip.
• Available in 304 and 316 stainless steel.
• Also available in a 304 vintage finish and 316 black finish.

Applications

• Terrace decking on timber substructures
• Cladding

Building Materials

• Accoya
• Merbau
• Spotted Gum
• Blackbutt
• Tallowwood
• Stringybark
• Karri
• Sydney Bluegum
• Jarrah
• Ironbark
• Tasmanian Oak
• Victorian Ash
• Grey Box
• Oak

Functioning

• TX drive — Optimum torque transmission, a tight and snug fit, and fast centering.
• Raised countersunk head — Milling pockets and small diameter give a discreet, subtle appearance and allow the head to sink cleanly and easily.
• Asymmetrical thread — Reduced drive-in torque, high overtorque, and easy screw-in.
• Optimised drilling tip — Quick, easy, and safe positioning and installation with reduced timber splitting — ideal for deck construction.
• 304 & 316 stainless steel — High corrosion and weather resistance, increased fracture torque, suitable for outdoor use and close-to-water applications.

For best results, we recommend pre-drilling and pre-countersinking holes.

Tip

Protection: Harsh chemical cleaners for timber may damage the screw surface. Please wash any residue off immediately for longer enjoyment.

Recommendation: Our black coated HS decking screws are best used for surfaces with low mechanical stress. In decking areas with heavy foot traffic, we recommend the screws with our silver stainless finish.

Perfect for hardwood to softwood under-constructions.

Advantages

• Offers a high degree of weather resistance.
• The self-drilling tip makes installation quick and easy.
• Small head diameter and underhead pockets ensure the head can sink cleanly and easily.
• Timber is protected from tearing or splitting by the drill tip.
• Available in 304 and 316 stainless steel.
• Also available in a 304 vintage finish and 316 black finish.

Applications

• Terrace decking on timber substructures
• Cladding

Building Materials

• Accoya
• Merbau
• Spotted Gum
• Blackbutt
• Tallowwood
• Stringybark
• Karri
• Sydney Bluegum
• Jarrah
• Ironbark
• Tasmanian Oak
• Victorian Ash
• Grey Box
• Oak

Functioning

• TX drive — Optimum torque transmission, a tight and snug fit, and fast centering.
• Raised countersunk head — Milling pockets and small diameter give a discreet, subtle appearance and allow the head to sink cleanly and easily.
• Asymmetrical thread — Reduced drive-in torque, high overtorque, and easy screw-in.
• Optimised drilling tip — Quick, easy, and safe positioning and installation with reduced timber splitting — ideal for deck construction.
• 304 & 316 stainless steel — High corrosion and weather resistance, increased fracture torque, suitable for outdoor use and close-to-water applications.

For best results, we recommend pre-drilling and pre-countersinking holes.

Tip

Protection: Harsh chemical cleaners for timber may damage the screw surface. Please wash any residue off immediately for longer enjoyment.

Recommendation: Our black coated HS decking screws are best used for surfaces with low mechanical stress. In decking areas with heavy foot traffic, we recommend the screws with our silver stainless finish.

The Otter Decking Wide Boy Chemshield Screw (10G x 50mm) is specifically designed for decking, offering a robust fastening solution. Its wider head enhances grip and provides a larger bearing surface, making it ideal for securing decking boards. With a 10-gauge thickness and 50mm length, these screws penetrate various materials effectively while maintaining strength. The Chemshield coating ensures excellent corrosion resistance for outdoor use. Supplied in a box of 1000, they are convenient for large projects, ensuring a reliable and long-lasting decking installation for both professionals and DIYers.

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OTTER Decking 2 in 1 Drilling and Countersinking Bit 10G–12G x 3.6mm (Blister Pack of 1) is a combined drilling and countersinking solution designed for clean, professional fastening in decking, timber, and general construction projects. It allows you to drill pilot holes and create neat countersinks in a single step, improving speed, accuracy, and finish quality on site or in the workshop.

Key Features

• Application suitability – Optimised for decking, softwood, hardwood, and general timber construction, delivering clean holes and consistent screw seating.
• Design – 2-in-1 pilot drill and countersink geometry for precise alignment and flush or recessed screw heads in one pass.
• Material quality – Manufactured from high-quality steel for reliable cutting performance and reduced bit wear.
• Durability – Robust construction and wear-resistant cutting edges support repeated use in demanding jobsite conditions.
• Installation – Sized for 10G–12G screws with a 3.6mm pilot, helping reduce timber splitting and ensuring secure, accurate fastening.
• Maintenance – Simple to clean and inspect, with a design that allows easy replacement if the pilot tip becomes worn.
• Versatility – Suitable for use with standard drill drivers across a wide range of outdoor and indoor timber and decking applications.

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WPC clips are essential for installing WPC decking as they enable a concealed fastening system, creating a clean and seamless appearance without visible screws or nails on the surface. They allow for uniform spacing between boards while ensuring a secure and stable connection.

[additional]

WPC clips are essential for installing WPC decking as they enable a concealed fastening system, creating a clean and seamless appearance without visible screws or nails on the surface. They allow for uniform spacing between boards while ensuring a secure and stable connection.

[additional]

MFD Decking Countersunk Ribs Head Square Drive Type 17 304 Stainless Steel Screws 10g x 65mm (Box of 500) are engineered for long-lasting, rust-resistant fixing in timber decking and outdoor carpentry, providing secure, clean finishes that stand up to the elements.

Key Features

• Application suitability – Ideal for timber decking, pergolas, fencing, and general exterior carpentry where strong, reliable fixing is essential.
• Design – Countersunk ribs head seats neatly below the timber surface for a flush, professional finish with reduced timber splitting.
• Material quality – Manufactured from 304 stainless steel for excellent corrosion resistance in outdoor and coastal environments.
• Durability – Type 17 cutting point and robust 10g shank deliver high pull-out strength and long-term performance under load.
• Installation – Square drive recess provides positive bit engagement, reducing cam-out and making installation faster and easier.
• Maintenance – Rust-resistant stainless construction minimises staining and reduces the need for ongoing maintenance or replacement.
• Versatility – 50mm length suits a wide range of decking boards and exterior timber thicknesses, making it a go-to screw for multiple projects.

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The MFD countersunk ribbed head decking type 17 screws, 10 gauge by 50 mm, provide strong performance in decking applications. Their ribbed head enhances grip and prevents pull-through, while the type 17 point ensures easy penetration without pre-drilling. Supplied in a box of 1000, these screws are a cost-effective choice for both professionals and DIY projects, ensuring durability and strength.

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Macsim Builders Mate Decking Countersunk Self-Embedding Head Square Drive T17 304 Stainless Steel Screw 10g x 65mm (Box of 500) is engineered for high-quality, corrosion-resistant timber decking installations, delivering secure fixing and a clean, professional finish in demanding outdoor environments.

Key Features

• Application suitability – Ideal for exterior timber decking, joists, and general outdoor carpentry where long-term structural integrity is critical.
• Design – Countersunk, self-embedding head provides a flush finish that reduces timber splitting and improves aesthetics.
• Material quality – Manufactured from 304 stainless steel for excellent corrosion resistance in most outdoor and coastal conditions.
• Durability – Resists rust, staining, and weather-related degradation, helping extend the life and appearance of your deck.
• Installation – Square drive and T17 self-drilling point offer strong bit engagement and fast, controlled driving with reduced cam-out.
• Maintenance – Low-maintenance fastener choice that minimises staining and screw-related deck repairs over time.
• Versatility – Suitable for a wide range of treated and hardwood timbers, making it a go-to screw for professional and DIY decking projects.

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Macsim Builders Mate Decking Countersunk Self-Embedding Head Square Drive T17 304 Stainless Steel Screw 10g x 50mm (Box of 1000) is engineered for high-quality, corrosion-resistant timber decking installations, delivering secure fixing and a clean, professional finish in demanding outdoor environments.

Key Features

• Application suitability – Ideal for exterior timber decking, joists, and general outdoor carpentry where long-term structural integrity is critical.
• Design – Countersunk, self-embedding head provides a flush finish that reduces timber splitting and improves aesthetics.
• Material quality – Manufactured from 304 stainless steel for excellent corrosion resistance in most outdoor and coastal conditions.
• Durability – Resists rust, staining, and weather-related degradation, helping extend the life and appearance of your deck.
• Installation – Square drive and T17 self-drilling point offer strong bit engagement and fast, controlled driving with reduced cam-out.
• Maintenance – Low-maintenance fastener choice that minimises staining and screw-related deck repairs over time.
• Versatility – Suitable for a wide range of treated and hardwood timbers, making it a go-to screw for professional and DIY decking projects.

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