A2 stainless steel annular ring shank nails sold in 1kg bags. The ring shank profile gives significantly better holding power than a smooth nail. Suitable for external and structural timber applications. Conforms to Eurocode 5 and service class 3.
Size
Price
QTY
25mm x 1.80
£13.97£16.76
30mm x 1.80
£10.97£13.16
40mm x 2.65
£13.97£16.76
50mm x 2.65
£13.97£16.76
65mm x 3.35
£10.97£13.16
75mm x 3.75
£10.97£13.16
100mm x 4.50
£10.97£13.16
Annular ring shank stainless steel nails are the go-to fixing where a standard smooth shank nail simply will not hold. The rings cut into the timber fibres as the nail is driven, creating mechanical resistance that makes the nail very difficult to withdraw. Where timber swells and contracts with moisture, or where loads will test the joint over time, this type of nail earns its place. These are manufactured in A2 austenitic stainless steel, making them genuinely suited to external and coastal environments where a plain bright nail would rust and stain within a season or two.
Available in a range of sizes from 25mm x 1.80 up to 100mm x 4.50, there is a size here for most structural and cladding applications. The 1kg bag format is practical for site use: enough to get a job done without lugging around a full box, and easy to price into a quote. Each size is sold separately, so you can order exactly what the job requires.
Where Stainless Steel Nails Like These Are Used
These nails are widely used in timber frame construction, external cladding, decking, fencing, and any application where the fixing will be exposed to the weather long-term. A2 stainless steel is the standard specification for service class 3 environments under Eurocode 5, which covers timber exposed to weather or high humidity. If you are working to a structural timber specification or a building control requirement, these nails will meet that standard without needing to source a special product.
The ring shank design is particularly effective in softer timbers such as treated softwood decking boards and cladding battens, where a smooth nail can work loose over years of movement. For hardwoods and dense engineered timbers, pre-drilling is often worth doing at the thicker sizes to avoid splitting and to keep the nail driving straight.
A2 Stainless Steel for External Work
A2 austenitic stainless steel offers reliable corrosion resistance for the vast majority of external timber applications in the UK. It will not react with tanalised or pressure-treated timber in the way that ordinary bright steel or galvanised fixings sometimes can, which helps avoid staining on visible surfaces like cladding or fascia boards. For highly aggressive coastal or marine environments, A4 grade stainless steel would be the more cautious choice, but for standard external work these nails are a well-specified and cost-effective option.
Pro Tip: When nailing treated softwood cladding, use the smallest diameter ring shank nail that gives adequate holding power for the board thickness, as thinner shanks split the timber less and the ring profile will compensate for the reduced shank size.
Annular ring shank stainless steel nails are used across a wide range of external timber work. Typical jobs include fixing external cladding boards, softwood decking, fencing panels and rails, roofing battens, fascias, soffits, and structural timber connections in timber frame builds. They are also used in conservation and restoration work where staining from corroding fixings would be unacceptable on period timber.
On any project requiring compliance with Eurocode 5 service class 3, these nails satisfy the specification straight out of the bag. Groundworkers and landscapers use the larger sizes for treated timber sleepers and post-and-rail fencing where long-term holding power in wet ground conditions is needed.
Best For
External timber cladding
Softwood and hardwood decking
Fencing and post-and-rail work
Roofing battens and sarking
Timber frame structural connections
Fascia and soffit boards
Conservation and restoration timber work
Available Sizes
25mm x 1.80
30mm x 1.80
40mm x 2.65
50mm x 2.65
65mm x 3.35
75mm x 3.75
100mm x 4.50
Key Properties
A2 austenitic stainless steel
Ring shank profile for increased withdrawal resistance
Conforms to Eurocode 5
Suitable for service class 3 environments
Corrosion resistant for external use
Compatible with tanalised and pressure-treated timber
Sold in 1kg bags
Not suitable for: Not recommended for highly aggressive marine or coastal splash-zone environments where A4 stainless steel would be the correct specification. Not intended for use with a nail gun unless the specific gun and nail size are confirmed compatible.
Select the nail length based on the timber thickness being fixed. As a general rule, the nail should penetrate the receiving timber by at least twice the thickness of the board being fixed. For cladding boards and decking, this usually means a 50mm or 65mm nail for standard 19mm to 25mm boards. For structural connections in timber frame work, refer to your engineer's specification for the correct size and frequency.
Drive nails at a slight angle for improved holding in cladding applications. On dense or dry hardwoods, pre-drill at the larger nail diameters to avoid splitting the board face and to keep the nail on a true line. Always nail from the face side of cladding boards to allow for natural timber movement.
Select the correct nail size for the timber thickness, ensuring adequate penetration into the receiving member.
Check the timber for knots or dense grain near fixing points and reposition slightly if splitting is likely.
Pre-drill hardwoods or very dry softwoods when using 75mm or 100mm nails to avoid splitting.
Position the nail and drive squarely or at a slight angle depending on the application.
Set the nail head flush with the timber surface using a nail punch where a clean finish is needed.
Space fixings according to any relevant structural or manufacturer specification for the cladding or decking system in use.
Are these nails suitable for use with tanalised or pressure-treated timber?
Yes. A2 stainless steel does not react with the preservative chemicals used in tanalised and pressure-treated timber. Ordinary bright steel and some galvanised fixings can corrode when in contact with treated timber, causing staining on visible surfaces. Stainless steel nails avoid this problem, which is why they are commonly specified for treated external cladding and decking.
How much timber will a 1kg bag of ring shank nails cover?
It depends on the nail size and fixing spacing. As a rough guide, a 1kg bag of 50mm x 2.65 nails contains approximately 300 to 350 nails, which is typically enough for around 15 to 20 square metres of standard cladding at normal fixing centres. Smaller sizes will yield more nails per kilogram and larger sizes fewer, so order accordingly based on your fixing schedule.
These annular ring shank nails are manufactured from A2 austenitic stainless steel, which provides reliable corrosion resistance for external timber applications in service class 3 conditions as defined by Eurocode 5. The annular ring profile along the shank mechanically locks into timber fibres during driving, significantly increasing withdrawal resistance compared to a smooth shank nail of equivalent diameter. A2 stainless steel contains a minimum of 18% chromium and 8% nickel, giving it good resistance to oxidation and corrosion in most outdoor environments.
From £6.89£8.27 EX VATINC VAT Select options This product has multiple variants. The options may be chosen on the product page
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