The EU’s Carbon Border Adjustment Mechanism (CBAM) moved from a reporting-only transition into its full definitive regime on 1 January 2026. For anyone buying or supplying steel and aluminium fasteners across the European border, CBAM is no longer a future compliance item — it now attaches a real carbon cost to imported goods. This update explains what changed, confirms that screws and bolts under CN 7318 are in scope, shows how to estimate the added import cost, and sets out what European importers now need from their fastener suppliers.
What Changed on 1 January 2026
During the transitional phase from 2023 to 2025, importers of CBAM goods only had to report the embedded emissions of what they brought into the EU — no payment was due. That grace period is over. Under the definitive regime, an EU importer must now be an authorised CBAM declarant, report the embedded emissions of covered goods each year, and buy and surrender CBAM certificates covering those emissions. Certificate prices track EU Emissions Trading System (ETS) allowance prices, so the cost of importing carbon-intensive goods now moves with the EU carbon market. In practice, the emissions figure behind each tonne of imported steel or aluminium has become a line item with a price attached — and the party legally on the hook is the EU importer, not the overseas manufacturer.
Are Fasteners (CN 7318) Covered? Yes.
This is the point many fastener buyers missed during the transition. CBAM covers six sectors: cement, iron and steel, aluminium, fertilisers, electricity and hydrogen. The iron and steel scope reaches well beyond raw slabs and coils into downstream products, and many screws, bolts, nuts and washers classified under CN heading 7318 fall inside it. Because scope is determined by the exact CN code declared at import — not by the general product description — the safest approach is to confirm the specific eight-digit code your EU customer declares. Aluminium fasteners and components can likewise fall under the aluminium scope. For a plant exporting steel fasteners into Europe, CBAM is a direct supply-chain issue, not someone else’s problem.
The 50-Tonne Threshold: Relief for Small Shipments
The 2025 “Omnibus” simplification — Regulation (EU) 2025/2083 — added a practical escape valve. A single de minimis mass threshold of 50 tonnes of CBAM goods per importer per year now exempts smaller importers from CBAM obligations entirely. The design is deliberate: the threshold removes roughly 90% of importers from the paperwork while still capturing about 99% of the emissions, because the largest steel and aluminium importers sit far above 50 tonnes. A 2026 review confirmed the threshold stays in place. For a buyer importing occasional small lots of specialty fasteners, this may mean no CBAM cost at all; for a Tier-1 running volume production, it offers little relief and full compliance applies.
What EU Importers Now Need From Their Suppliers
CBAM shifts a data burden up the supply chain. To declare accurate emissions instead of falling back on EU default values — which carry a built-in mark-up and usually overstate a modern plant’s footprint — European importers need specific, verifiable information from their fastener makers:
- Embedded emissions per tonne for each CN code shipped;
- The steel or aluminium precursor used (for most fasteners, wire rod), its country of origin, and its emissions;
- The production route and processes at the plant;
- Confirmation of whether the figures are actual and independently verified, or based on defaults.
For most iron and steel goods, only direct emissions are counted in the definitive period — the fuel burned in processes such as heat treatment and annealing — while the electricity used for cold forming sits outside the CBAM figure, even if buyer templates still ask for it.
How Much Does CBAM Add to Landed Cost? A Worked Example
The CBAM cost an EU importer pays is, in simple terms:
CBAM cost = embedded emissions (tCO₂e / tonne) × certificate price (€ / tCO₂e) × tonnes imported − carbon price already paid at origin
Three inputs drive it: how carbon-intensive the goods are, the certificate price (which tracks EU ETS — in the order of €70–90/tCO₂e in 2026), and the tonnage. Because iron and steel count only direct emissions in the definitive period, a fastener’s figure is dominated by the embedded emissions of its steel precursor plus the direct fuel use of heat treatment.
An illustrative 20-tonne container of steel fasteners at an assumed €80/tCO₂e certificate price:
| Scenario | Embedded emissions | CBAM cost / tonne | Per 20 t container |
|---|---|---|---|
| EU default value (with mark-up) | ~2.0 tCO₂e/t | ~€160 | ~€3,200 |
| Verified supplier data (favourable route) | ~1.0 tCO₂e/t | ~€80 | ~€1,600 |
In this example, simply supplying verified emissions data instead of accepting the default halves the CBAM cost — about €1,600 per container, before any adjustment for carbon already priced at origin. Scaled across a year’s volume, the gap between “default” and “verified” is often the difference between a competitive landed price and a losing one.
Two practical points for buyers: (1) budget CBAM as a variable cost that rises and falls with the EU carbon price, not a fixed duty; and (2) the single biggest lever you control is the quality of supplier emissions data — which is why asking for it at the quotation stage matters. Figures above are illustrative; use the published certificate price and your product’s actual or default emissions for a real calculation.
Why CBAM Favours Traceable, Cold-Formed Production
The way a fastener is made now has a visible carbon and compliance dimension. Cold forging shapes metal at room temperature and carries low direct emissions, which works in a supplier’s favour under a regime that prices direct carbon. Just as important is traceability: a manufacturer that verifies incoming bar chemistry and origin, keeps mill certificates on every heat, and can follow the mass balance from wire rod to finished part is positioned to hand its European customers the emissions data CBAM demands — rather than leaving them to accept penalising default values.
At KEYFIX, material verification by optical emission spectrometry on our raw material line, documentation under our inspection standards, and cold forging and CNC capability under an IATF 16949 system are exactly the foundations a CBAM-ready data package is built on.
If you import steel or aluminium fasteners into the EU and need embedded-emissions data, precursor origin, and mill documentation to support a CBAM declaration — or want to design parts around a lower carbon footprint — send your requirements to the KEYFIX engineering team. We will confirm what we can document today and how your programme is affected.
This article is general information on the EU CBAM regime as of October 2026 and is not legal or customs advice. Confirm your specific obligations and CN codes with your customs adviser or national competent authority.
