Round wire nails with a full round head for solid clamping. Galvanised for medium-duty rust protection. Suitable for soft and hardwood. Conforms to Eurocode 5 and service class 2. Available in a range of sizes in a 25kg box.
Size
Price
QTY
25mm
£69.90£83.88
90mm
£49.90£59.88
30mm
£59.90£71.88
40mm
£51.90£62.28
50mm
£51.90£62.28
65mm x 2.65
£49.90£59.88
65mm x 3.35
£51.90£62.28
75mm
£49.90£59.88
100mm
£49.90£59.88
125mm
£51.90£62.28
150mm
£51.90£62.28
If you go through nails at any kind of rate on site, buying a 25kg box of galvanised roundhead nails makes a lot more sense than picking up a kilogram bag every few days. These are general-purpose round wire nails — the kind that end up in almost every timber job going. The full round head gives a good clamping surface, which matters when you need the nail to hold two pieces of material firmly together rather than just pin them. As a bulk buy of 25kg galvanised roundhead nails, this is the obvious choice for anyone doing volume work.
The galvanising provides medium-duty rust protection, which covers the vast majority of external and exposed timber applications. These nails conform to Eurocode 5 and service class 2, so they are appropriate for structural timber connections where that standard is required. Service class 2 covers conditions where moisture content may be slightly elevated but not continuously wet — think covered external structures, outbuildings, treated softwood framing, and similar. Not every nail supplier specifies this, so it is worth knowing if you are working to a spec.
What You Can Use Galvanised Roundhead Nails For
Round wire nails work across both softwood and hardwood, which keeps things simple when you are switching between materials on the same job. The range of available sizes — from 25mm up to 150mm — means one product covers everything from light cladding work through to heavy structural framing. The full round head sits flush against the surface without burying or pulling through, making it practical wherever a neat, secure fix is needed without a lot of fuss.
A 25kg box is a serious quantity, but if you are running a busy site or doing a full timber frame build, it disappears faster than you might think. Buying in bulk at this weight also keeps your cost per nail low, which adds up over a full project. These are galvanised roundhead nails you can order once and get on with the job.
Pro Tip: When hand-nailing structural hardwood, blunting the nail tip slightly with a hammer tap before driving reduces the risk of splitting the grain along the length of the board.
Galvanised roundhead nails are used across general carpentry, timber framing, fencing, decking substructures, roofing battens, carcassing, and outbuilding construction. The galvanised coating makes them the right choice anywhere untreated bright nails would corrode prematurely, including external work, treated timber, and covered but ventilated structures. Joiners, carpenters, groundworkers, and general builders all reach for these as a day-to-day fixing. The range of sizes means they cover light and heavy applications without needing multiple products on the same job.
Best For
General timber framing and carcassing
Fencing and decking subframes
Roofing battens
Outbuildings and covered external structures
Hardwood and softwood connections
Available Sizes
25mm
25mm x 1.80
30mm
40mm
50mm
65mm
65mm x 2.65
65mm x 3.35
75mm
90mm
100mm
125mm
150mm
Key Properties
Galvanised for medium-duty rust protection
Full round head for clamping
Suitable for soft and hardwood
Conforms to Eurocode 5
Service class 2 rated
Supplied in 25kg box
Not suitable for: Not suitable for continuously wet or submerged applications where stainless steel or hot-dip galvanised fixings would be required. Not recommended where a lost head or oval nail finish is needed.
Select the appropriate nail length for your timber thickness — a general rule is that the nail should penetrate the receiving piece by at least twice the thickness of the piece being fixed. Drive nails square to the surface and at consistent spacing to avoid splitting, particularly near the end grain of boards. Pre-drilling is worth considering in hardwood or close to board ends where splitting is a risk.
Select the correct nail size for your timber thickness and load requirement.
Mark fixing positions and maintain adequate edge and end distances to prevent splitting.
For hardwood or near end grain, pre-drill a pilot hole slightly smaller than the nail shank.
Drive the nail square to the surface using consistent, controlled strikes.
Check the head sits flush without over-driving, which reduces the clamping effect.
For structural applications, verify nail spacing and quantity against your Eurocode 5 specification.
Are these nails suitable for treated timber?
Yes. Galvanised nails are the standard choice for use with pressure-treated timber. Bright steel nails react with the preservative chemicals in treated wood and corrode quickly, so the galvanised coating here is the practical requirement rather than just a preference.
What does service class 2 mean for these nails?
Service class 2 under Eurocode 5 covers timber connections in environments where the moisture content may occasionally rise but is not permanently elevated. This includes covered external structures, ventilated outbuildings, and similar conditions. If your project specification calls out service class 2 compliance, these nails meet that requirement.
These round wire nails are manufactured from steel wire with a galvanised coating providing medium-duty corrosion resistance. The full round head profile distributes load across a wider bearing area than lost-head or oval alternatives. Compliance with Eurocode 5 and service class 2 makes them appropriate for specified structural timber connections in appropriate exposure conditions. Available in sizes from 25mm to 150mm to suit a wide range of timber thicknesses.
Finish
Galvanised
Head Type
Round (full round head)
Material
Steel wire
Available Sizes
25mm, 25mm x 1.80, 30mm, 40mm, 50mm, 65mm, 65mm x 2.65, 65mm x 3.35, 75mm, 90mm, 100mm, 125mm, 150mm
Box Weight
25kg
Standard
Eurocode 5
Service Class
2
Suitable Timber
Softwood and hardwood
Weight
N/A
Size
100mm, 125mm, 150mm, 40mm, 50mm, 75mm, 25mm, 25mm x 1.80, 30mm, 65mm, 65mm x 2.65, 65mm x 3.35, 90mm
Box Quantity
25
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