About Durable Hardware
Timber & Hardware From One Trusted Source
One supplier. One conversation. Everything you need to complete the job!
Durable Hardware is the hardware supply arm of Durable Hardwoods International. We supply premium external-grade fixings, fasteners, brackets, and fittings that are specified to work with our hardwood timber range. Every product in our range is selected for outdoor exposure across all Australian climate zones — from suburban decks and rural fences to coastal boardwalks and marine jetties.
Matched to Your Timber — Compatible with Merbau, Blackbutt, Cypress Pine, and Treated Pine
Graded for Your Environment — 304 SS, 316 SS, HDG, and Zinc-Aluminium options across all categories
Meets Australian Standards— Products selected to meet or exceed AS 3566.1 and relevant standards
Specifying the Right Grade
Built for where you build
The Australian environment is demanding. Humidity, salt air, UV, and moisture all accelerate corrosion. Choosing the wrong grade of hardware is a costly mistake. Use this guide to specify correctly — every time.
Recommended Grade: 304 Stainless Steel. Hot Dipped Galvanised (HDG).
Suitable for:
• Residential decking and pergolas
• External cladding and screening
• Garden and boundary fencing
• Structural framing and sub-frames
Typical project: A Blackbutt backyard deck with HDG joist hangers and 304 SS decking screws.
Recommended Grade: 316 Marine Grade Stainless Steel
Suitable for:
• Coastal residential decking
• Beachside fencing and screening
• Elevated structures near the ocean
• Pool surrounds and outdoor entertaining
Typical project: A Merbau coastal deck with 316 SS decking screws, post stirrups, and joist hangers throughout.
Grade note: 316 SS contains molybdenum — providing significantly greater salt-air corrosion resistance than 304 SS. Do not substitute.
Graded for Your Environment — 304 SS, 316 SS, HDG, and Zinc-Aluminium options across all categories
Recommended Grade: Grade 316 Stainless Steel — all fixings without exception
Suitable for:
• Jetties and boat ramps
• Coastal boardwalks and bridges
• Public infrastructure over or near water
• Tidal and splash zone structures
Typical project: A hardwood jetty with 316 SS hex bolts, threaded rod, marine joist hangers, and decking screws — complete marine-grade specification.
Grade note: Contact our team for project-specific marine hardware schedules. Structural engineer specification recommended.
Recommended Grade: Hot Dipped Galvanised (HDG). Zinc-Aluminium (Zn-Al) for wet or coastal rural
Suitable for:
• Rural boundary and livestock fencing
• Vineyard and trellis wire systems
• Farm gates and post structures
• High-moisture and tropical Queensland environments
Typical project: A Cypress Pine post-and-rail fence with HDG post stirrups, gate hardware, and high-tensile fencing wire. Zn-Al wire specified for coastal Queensland runs.
Grade note: Never substitute zinc electroplated fixings for HDG in rural or structural applications — premature corrosion and structural failure risk.
Grade Quick Reference Table
Grade | Full Name | Use When |
304 SS | Grade 304 Stainless Steel | Standard outdoor, suburban, inland applications |
316 SS | Grade 316 Stainless Steel | Coastal, marine, pools — within 1km of coast or over water |
HDG | Hot Dipped Galvanised | Structural connections, rural, high-volume applications |
Zn-Al | Zinc-Aluminium Coated | Coastal rural, tropical, high-moisture wire applications |
The Product Range
Nine Categories. Every Environment Covered.
From the screw that holds your deck board to the marine bolt that holds a jetty beam — our range covers every fixing need for external hardwood projects. All products are specified for outdoor exposure and compatible with Merbau, Blackbutt, Cypress Pine, and Treated Pine.
1. Screws
The primary fixing for any hardwood project. Screws across our range cover decking, cladding, screening, and structural sub-frames. Pre-drilling is recommended for all hardwood species to prevent splitting. Torx (TX) or Square drive preferred — both prevent cam-out in dense timber. Available in 304 SS for standard outdoor use and 316 SS for coastal and marine environments.
Product | Size | Grade | Notes |
Hardwood decking screw — countersunk | 10g × 65mm | 304 SS | Standard inland / suburban decking |
Hardwood decking screw — countersunk | 10g × 65mm | 316 SS | Coastal, marine, pool environments |
Hardwood decking screw — countersunk | 12g × 75mm | 304 SS | Thicker boards, structural fixing |
Hardwood decking screw — countersunk | 12g × 75mm | 316 SS | Marine / coastal heavy duty |
Trim head decking screw | 10g × 65mm | 304 SS | Low-profile head for feature timber |
Trim head decking screw | 10g × 65mm | 316 SS | Feature timber, coastal |
Cladding & screening screw | 10g × 50mm | 316 SS | External cladding, privacy screens |
Cladding & screening screw | 10g × 65mm | 304 SS | Standard external cladding |
Batten screw — bugle head | 14g × 75mm | HDG | Sub-frame fixing to joists / bearers |
Batten screw — bugle head | 14g × 100mm | HDG | Deeper structural sub-frame fixing |
Connector screw (bracket fixing) | 12g × 35mm | HDG | Joist hangers and framing brackets |
* Merbau-coloured bronze ceramic coated screws available — 2000hr salt spray tested. Contact us for availability.
* Self-drilling / self-countersinking screws available — reduces installation time on large decking projects.
2. Nails
Structural nails for external hardwood framing, cladding, and connector plate applications. All nails in our range are hot-dipped galvanised or stainless steel — the only appropriate specification for outdoor use. Zinc electroplated nails corrode prematurely and must never be used in external hardwood applications. Within 1m of pools or near the coast, stainless steel is mandatory.
Product | Size | Grade | Notes |
Joist hanger nail — flat head | 30mm × 2.8mm | HDG | Connector plate nails for framing brackets |
Joist hanger nail — flat head | 40mm × 3.05mm | HDG | Heavy duty connector plates |
Framing nail — round head | 75mm × 3.05mm | HDG | General structural framing |
Framing nail — round head | 90mm × 3.75mm | HDG | Heavy structural applications |
Clout nail — flat head | 40mm × 2.8mm | 316 SS | Hardwood cladding and fascia boards |
Clout nail — flat head | 40mm × 2.8mm | HDG | Inland cladding applications |
Gun nail — collated | 75mm × 3.05mm | HDG | Framing nailer compatible |
Gun nail — collated | 90mm × 3.75mm | HDG | Heavy structural nailer use |
Bullet head nail | 75mm × 3.15mm | HDG | Hardwood paling fixing |
Bullet head nail | 65mm × 2.87mm | HDG | Light paling and batten fixing |
3. Bolts, Nuts & Washers
Structural connection hardware for pergolas, gate posts, bridges, boardwalks, and heavy-load timber connections. Always match bolt, nut, and washer to the same grade — mixing grades accelerates galvanic corrosion. Use 316 SS for all coastal and marine environments. HDG for inland structural applications.
Product | Size | Grade | Notes |
Hex head bolt | M10 × 75mm | 316 SS | Post-to-beam marine connections |
Hex head bolt | M10 × 100mm | 316 SS | Thicker structural members |
Hex head bolt | M12 × 100mm | 316 SS | Heavy structural, gate posts |
Hex head bolt | M12 × 150mm | 316 SS | Pergola, bridge, boardwalk |
Hex head bolt | M16 × 150mm | HDG | High load structural applications |
Hex head bolt | M16 × 200mm | HDG | Heavy post and beam connections |
Coach screw (lag bolt) | M10 × 100mm | HDG | Post to bearer connections |
Coach screw (lag bolt) | M12 × 150mm | HDG | Heavy structural connections |
Coach screw (lag bolt) | M12 × 200mm | HDG | Extra deep structural fixing |
Cup head (carriage) bolt | M10 × 75mm | 316 SS | Feature timber, visible connections |
Cup head (carriage) bolt | M12 × 100mm | 316 SS | Decking posts, handrail fixing |
Cup head (carriage) bolt | M12 × 150mm | HDG | Structural post connections |
Hex nut | M10, M12, M16 | 316 SS | To match 316 bolt grade |
Hex nut | M10, M12, M16 | HDG | To match HDG bolt grade |
Flat washer | M10, M12, M16 | 316 SS | Coastal / marine applications |
Flat washer | M10, M12, M16 | HDG | Standard structural applications |
Spring washer | M10, M12 | 316 SS | Anti-vibration, coastal structures |
Threaded rod | M12 × 1000mm | 316 SS | Through-bolt connections, boardwalks |
Threaded rod | M16 × 1000mm | 316 SS | Heavy through-bolt, marine structures |
4. Post Stirrups & Anchors
Post stirrups are critical for hardwood pergolas, decking posts, and any structure where keeping timber off the ground extends service life and prevents decay. Available in bolt-down and set-in-concrete configurations to suit new and retrofit installations. 316 SS specified for all coastal and marine post applications.
Product | Size | Grade | Notes |
Full stirrup — bolt down | 90 × 90mm saddle | HDG | Standard pergola / deck post |
Full stirrup — bolt down | 100 × 100mm saddle | HDG | Standard hardwood post size |
Full stirrup — bolt down | 140 × 140mm saddle | HDG | Heavy pergola / gate post |
Full stirrup — bolt down | 150 × 150mm saddle | HDG | Strainer / corner posts |
Full stirrup — bolt down | 90 × 90mm saddle | 316 SS | Coastal / marine environments |
Full stirrup — bolt down | 100 × 100mm saddle | 316 SS | Marine grade post support |
Full stirrup — set in concrete | 90 × 90mm saddle | HDG | New slab / footing installation |
Full stirrup — set in concrete | 100 × 100mm saddle | HDG | New footing, hardwood post |
Half stirrup / L stirrup | 130 × 300mm | HDG | Posts against wall or step |
Half stirrup / L stirrup | 130 × 450mm | HDG | Deeper fixing, against wall |
T-blade stirrup — bolt down | 90mm saddle | HDG | Feature posts, standard |
T-blade stirrup — bolt down | 130mm saddle | HDG | Medium feature posts |
T-blade stirrup — bolt down | 180mm saddle | HDG | Large feature and entry posts |
Bolt-down post anchor | 90mm, 100mm | HDG | Retrofit to existing concrete |
* Post stirrups prevent direct timber-to-ground contact, significantly extending post service life.
* Always use M12 bolts minimum for structural post stirrup applications.
5. Joist Hangers & Framing Brackets
Structural framing connectors for decking sub-frames, elevated boardwalks, and timber framing. Available in HDG and 316 marine-grade stainless steel. Widths of 35mm, 45mm, and 50mm cover all common hardwood timber sizes. Pre-punched holes accept connector plate nails, Type 17 screws, or bolts.
Product | Size | Grade | Notes |
Joist hanger | 35 × 90mm | HDG | Light framing, softwood joists |
Joist hanger | 45 × 90mm | HDG | Standard hardwood joist size |
Joist hanger | 45 × 190mm | HDG | Deep joist, elevated decking |
Joist hanger | 50 × 200mm | HDG | Commercial boardwalk, bridge |
Joist hanger | 45 × 90mm | 316 SS | Coastal / marine decking |
Joist hanger | 45 × 190mm | 316 SS | Marine elevated decking |
Framing angle — 90° | 40 × 40 × 40mm | HDG | General structural bracing |
Framing angle — 90° | 50 × 50 × 50mm | HDG | Heavy structural connections |
Strap tie | 30mm × 1.0mm | HDG | Rafter to wall plate strapping |
Triple grip | Standard | HDG | Rafter / joist to bearer |
Saddle hanger | 45mm, 50mm | HDG | Ridge beam, double joist support |
* Use ONLY hot-dipped galvanised connector plate nails (30mm × 2.8mm) or Type 17 screws (12g × 35mm) with joist hangers.
* Do not use conventional nail guns with joist hangers — use multi-blow collated connector nail guns.
6. Fencing Wire
A comprehensive wire range for rural boundary fencing, livestock containment, vineyard trellising, and security applications. High tensile (HT) wire allows greater tension with fewer posts — ideal for long straight runs. Zinc-Aluminium coated wire is recommended for coastal, tropical Queensland, and high-moisture environments where standard galvanised wire would corrode prematurely.
Product | Size | Grade | Notes |
Plain wire — high tensile | 2.5mm | Heavy galvanised | Standard rural line wire |
Plain wire — high tensile | 3.15mm | Heavy galvanised | Heavy duty boundary fencing |
Barbed wire — high tensile | 1.57mm | Heavy galvanised | Long runs, cattle / property boundary |
Barbed wire — high tensile | 1.8mm | Heavy galvanised | General farm fencing |
Barbed wire — high tensile | 2.0mm | Heavy galvanised | Heavy duty rural fencing |
Barbed wire — Iowa (low tensile) | 2.5mm | Heavy galvanised | Easier handling, repairs, short runs |
Barbed wire — high tensile | 1.57mm | Zinc-Aluminium | Extended life, coastal / wet areas |
Vineyard / trellis wire | 1.6mm, 2.0mm, 2.5mm | Heavy galvanised | Light to medium grape vine trellis |
Vineyard / trellis wire | 2.65mm, 2.85mm, 3.15mm | Heavy galvanised | Heavy crop load trellis systems |
Tie wire / lacing wire | 1.57mm | Heavy galvanised | Chainwire fixing, general tying |
Tie wire / lacing wire | 2.0mm | Heavy galvanised | Heavy duty lacing, binding |
Helicoil wire | 4.0mm | Heavy galvanised | Chainwire fence support cable |
Hexagonal wire netting | 1.4mm / 13–41mm hex | Heavy galvanised | Rabbit / feral animal control, poultry |
* Wire available in 100m, 250m, 400m, and 500m rolls. Contact us for bulk roll pricing.
* Zinc-Aluminium coated wire recommended for coastal, tropical Queensland, and high-moisture environments.
7. Timber Oils & Finishes
A natural complement to our hardwood supply. These maintenance products protect and extend the life of all Durable Hardwoods timber species. Annual oiling is recommended for all external hardwood decking and cladding — it preserves appearance, slows weathering, and maximises service life. Available for new installation and renovation of existing weathered timber.
Product | Type | Application |
Penetrating hardwood oil — clear | Penetrating oil finish | Merbau, Blackbutt, all hardwood decking. Preserves natural colour. |
Penetrating hardwood oil — tinted | Penetrating oil finish | Colour-matched to timber species. Enhances grain and deepens tone. |
Decking cleaner / brightener | Pre-treatment solution | Pre-oiling preparation. Removes grey weathering and restores timber colour. |
Timber sealer — water-based | Surface sealant | End grain sealing on cut ends. Reduces moisture uptake and splitting. |
Merbau tannin inhibitor | Pre-treatment / sealer | Applied before installation. Prevents tannin bleed staining on concrete and paving. |
Bitumen end-grain coating | Protective coating | Applied to in-ground post ends. Reduces moisture ingress and extends post life. |
UV-resistant exterior stain | Penetrating stain | Cladding, screening, and fencing. Long-lasting colour and UV protection. |
Timber restoration oil | Renovation product | Revives weathered, greyed hardwood decking and outdoor timber structures. |
* Annual oiling recommended for all hardwood decking and external cladding to maintain colour and maximise service life.
* Merbau will naturally weather to silver-grey if left untreated. Structural integrity is unaffected but regular oiling preserves appearance.
8. Gate Hardware
A complete gate hardware range to complement our fence post and fencing timber supply. All fittings are specified for outdoor exposure. Stainless steel is recommended for coastal environments and feature timber gates. Pool and safety fence gate hardware must comply with AS 1926.1 — consult your local council for current requirements.
Product | Size | Grade | Notes |
Butt hinge — heavy duty | 100mm | 316 SS | Feature timber gate hinges, coastal |
Butt hinge — heavy duty | 125mm, 150mm | HDG | Standard timber gate hinges |
Hook & band hinge | 300mm | HDG | Light rural and garden gates |
Hook & band hinge | 400mm, 600mm | HDG | Farm gate, heavy rural gate |
Weld-on hinge | 25mm pipe size | HDG | Steel frame / hardwood frame gates |
Weld-on hinge | 32mm pipe size | HDG | Heavy steel frame farm gate |
Gate latch — ring type | Standard | 316 SS | Feature timber gates, coastal |
Gate latch — ring type | Standard | HDG | Standard rural and garden gates |
Gate latch — bolt through | Standard | HDG | Farm and rural gate latches |
Gate spring — adjustable | Standard | HDG | Self-closing garden and pool gates |
Gate spring — adjustable | Standard | 316 SS | Pool gate compliance, coastal |
Drop bolt | 300mm | HDG | Double gate locking, light duty |
Drop bolt | 600mm | HDG | Double gate locking, heavy duty |
Gate wheel / castor | 100mm, 150mm | — | Heavy gate ground support, anti-sag |
* Pool and safety fence gate hardware must comply with AS 1926.1. Consult your local council for requirements.
9. Marine & Coastal Fixings
Specialised hardware for jetties, boardwalks, bridges, and all structures built over or near water. Every product in this category is Grade 316 stainless steel — the only appropriate specification for prolonged saltwater exposure. Grade 316 contains molybdenum, which provides significantly greater resistance to saltwater corrosion than Grade 304. All marine structures should be specified and inspected by a structural engineer.
Product | Size | Grade | Notes |
Hex bolt — marine | M12 × 100mm | 316 SS | Jetty, boardwalk, bridge beam connections |
Hex bolt — marine | M12 × 150mm | 316 SS | Thicker marine structural members |
Hex bolt — marine | M16 × 150mm | 316 SS | Heavy load marine structures |
Hex bolt — marine | M16 × 200mm | 316 SS | Extra heavy marine connections |
Cup head bolt — marine | M12 × 100mm | 316 SS | Exposed connections, feature finish |
Cup head bolt — marine | M12 × 150mm | 316 SS | Visible marine structural fixing |
Decking screw — marine | 10g × 65mm | 316 SS | Saltwater boardwalk decking |
Decking screw — marine | 12g × 75mm | 316 SS | Heavy hardwood marine decking |
Post stirrup — marine | 90 × 90mm | 316 SS | Jetty and marine post bases |
Post stirrup — marine | 100 × 100mm | 316 SS | Heavy marine post support |
Joist hanger — marine | 45 × 90mm | 316 SS | Coastal decking sub-frame |
Joist hanger — marine | 45 × 190mm | 316 SS | Deep joist coastal structure |
Threaded rod — marine | M12 × 1000mm | 316 SS | Through-bolt connections |
Threaded rod — marine | M16 × 1000mm | 316 SS | Heavy through-bolt, jetty piles |
Nut and washer set — marine | M12 | 316 SS | Complete bolt set, marine grade |
Nut and washer set — marine | M16 | 316 SS | Heavy bolt complete set |
* All marine structures should be specified and inspected by a structural engineer. Contact our team for project-specific advice.
* Grade 316 contains molybdenum which provides significantly greater resistance to saltwater corrosion than Grade 304.
Why Choose Durable Us?
Specifying the wrong hardware grade is one of the most common — and costly — mistakes in external timber construction. Premature corrosion, structural failure, and expensive rectification work all start with the wrong fixing in the wrong environment.
Durable Hardware takes the guesswork out. Our range is built specifically for external hardwood applications across all Australian climate zones. And because we are part of Durable Hardwoods International, we understand timber — which means we understand exactly what it takes to fix it properly and make it last.
Specified for External Hardwood
Every product in our range is selected specifically for use with external hardwood timber.
We do not stock generic hardware that may or may not perform outdoors.
If it is in our range, it is rated for outdoor exposure.
One Supplier for Timber AND Hardware
Durable Hardware is part of Durable Hardwoods International.
Order your timber and your hardware from the same team, in the same conversation.
Fewer suppliers. Fewer delays. Fewer specification errors.
Grade Advice You Can Rely On
Our team understands corrosion, climate, and Australian Standards.
We will help you specify the right grade for your environment, whether that is 304 SS for a suburban deck or full 316 SS for a coastal jetty.
Supply Across Four States
We supply NSW, Queensland, Victoria, and South Australia.
Our main warehouse is in Port Adelaide, SA, and we have a sales office in Sydney, NSW.
Contact our team for pricing, availability, and bulk supply across all states.
Backed by Australian Standards
All Durable Hardware products are selected to meet or exceed relevant Australian Standards including AS 3566.1-2002 for fastener corrosion requirements in timber applications.
Get In Touch
Talk to our team
Whether you need a quote, a product specification, or advice on the right grade for your project, our team is ready to help.
You can contact us in three ways:
1. Click on the "Contact Us" button below and complete the contact form,
2. Email us at "Contact@durablehardwoods.com.au",
3. Phone us on 0402 299 757 and speak directly to a member of our sales team.
