Market evolution: Steel nuts (CN 731816) — 2015–2025

Introduction

This report examines the evolution of EU trade in steel nuts (customs code 731816, encompassing standard, self-locking, and stainless-steel nuts) over the period 2015–2025. The analysis covers imports, exports, production, partner geography, and market concentration. Three major dynamics emerge from the data: a dramatic divergence between trade values and physical volumes driven by sustained price inflation; a substantial reorientation of trade partners reflecting geopolitical realignments; and an increasingly integrated EU industry that, while remaining a net importer, has significantly raised its export capacity and competitiveness. The product category includes six sub-headings, ranging from standard hex nuts to self-locking and blind-rivet variants in both stainless and non-stainless steel.

1. Price inflation, not volume growth, has driven the surge in trade values

EU export values nearly doubled while volumes stagnated

The most striking feature of the 2015–2025 period is the near-total disconnect between trade values and physical volumes on the export side. EU exports rose from €498 million to €900 million (+80.7%), yet the underlying quantity shipped barely changed — from 56,775 tonnes to 56,301 tonnes (−0.8%). The entire value increase is therefore explained by a +82.2% rise in unit export prices, which climbed from €8,759/t to €15,957/t (trade overview).

EU import values grew strongly, supported by both rising volumes and prices

On the import side, the EU's total intake grew from €703 million to €1.109 billion (+57.7%). Unlike exports, both quantity and price contributed: import volumes rose from 249,550 tonnes to 299,307 tonnes (+19.9%), while import unit values increased from €2,817/t to €3,703/t (+31.5%). The import price differential — roughly one-third of the export price — reflects the predominance of lower-cost Asian suppliers and the higher value-added content of EU exports (trade overview).

The shift toward higher-value sub-segments explains part of the price divergence

Disaggregated data reveal that the EU's export price growth was concentrated in specialty segments. Stainless steel nuts (CN 73181639) saw their export unit value explode from €12,546/t in 2017 to €37,581/t in 2025 — a near-tripling — while self-locking nuts (CN 73181660) rose from €9,798/t to €16,716/t (product segment breakdown). This points to a structural upgrade: the EU is exporting fewer tonnes of commodity fasteners and more tonnes of high-specification, higher-margin products. On the import side, stainless blind-rivet nuts (CN 73181631) also saw a dramatic price surge, from €5,994/t to €16,441/t, though from a smaller volume base.

2. A dramatic reshuffling of trade partners reflects geopolitical and competitive realignments

China has consolidated its position as the EU's dominant import supplier

China's share of EU steel-nut imports grew enormously over the decade: import values from China rose from €169 million to €364 million (+114.9%), peaking at €490 million around 2022 (top partners — imports). Taiwan remained the second-largest supplier at €259 million in 2025 (+12.2%), while the most dramatic proportional growth came from Türkiye, which surged from €16 million to €70 million (+350.2%). India (+37.8%), South Korea (+40.9%), and Japan (+48.1%) also recorded solid growth, though from smaller bases.

The United States has become the EU's top export destination by a wide margin

The most remarkable shift on the export side is the rise of the United States, which went from €85 million to €260 million (+204.4%), making it the EU's largest single-country export market by 2025 — surpassing both China (€119 million) and the United Kingdom (€109 million) (top partners — exports). Conversely, exports to Russia collapsed from €34 million to €3 million (−81.2%), a decline almost certainly linked to the sanctions regime imposed from 2022 onward. Mexico (+155.1%) and Switzerland (+91.4%) also emerged as fast-growing markets.

Germany anchors EU trade in both directions, but other members are catching up

Within the EU, Germany dominates both import and export flows, accounting for €344 million in imports (+51.6%) and €378 million in exports (+30.8%) by 2025 (top reporters). However, several other members showed faster proportional growth. Poland's imports grew +187.5% (from €37 million to €107 million), reflecting its expanding role as a manufacturing hub. On the export side, Italy recorded the largest proportional leap at +328.5% (from €36 million to €156 million), followed by France at +123.7%. These shifts suggest a broader geographic diversification of EU fastener production capacity.

The EU's import concentration has remained stable, but volume concentration increased

The Herfindahl-Hirschman Index (HHI) for import values remained essentially flat around 1,968–1,974 — indicating moderate concentration — while export value concentration rose marginally from 1,188 to 1,287 (concentration). Notably, the HHI for import volumes increased by 25.6% (from 3,371 to 4,233), indicating that while the value-based distribution of suppliers remained diversified, physical import flows became more concentrated in fewer hands — a potential source of supply-chain risk.

3. The EU is deepening its integration in global fastener trade while maintaining moderate self-sufficiency

Domestic production has grown, but less dynamically than trade

EU production of steel nuts rose from 160 million kg to 182.9 million kg (+14.3%) by volume and from €1.028 billion to €1.106 billion (+7.5%) by value over the period for which data is available (production volumes). Production peaked at 488.8 million kg in volume and €1.199 billion in value at some point during the decade, suggesting a cyclical peak likely linked to the post-2020 steel demand boom. The fact that production value grew more slowly than trade value (+7.5% vs. +80.7% for exports) indicates that the EU's price competitiveness on the world stage is increasingly tied to product mix rather than sheer manufacturing scale.

Specialisation is concentrated in core Western European producers

In 2025, the EU members most specialised in steel-nut production (as measured by revealed symmetric comparative advantage, RSCA) were Denmark (0.338), Germany (0.310), France (0.217), and Italy (0.174) (specialisation). At the other end, Cyprus (RSCA −1.0), Ireland (−0.970), and Greece (−0.959) showed virtually no specialisation in this product. Germany alone accounts for 40.2% of EU production value, underscoring the sector's heavy geographic concentration within the bloc.

The EU's trade intensity and export propensity have risen markedly

Several structural indicators confirm the EU's deepening engagement in global fastener markets:

(trade intensity, export propensity, net import reliance)

Net import reliance has remained relatively stable around 15–16%, though it spiked to a peak of 31.8% at one point during the decade — likely during the 2022 steel-price shock. The sharp rise in export propensity (+32.3%) is particularly significant: it shows that an increasing share of EU production is being directed toward international markets, a sign of growing competitiveness especially in the premium segments highlighted earlier. Meanwhile, volatility analysis reveals that several key supply routes carry elevated risk — imports from Malaysia (CV 0.46), the UK (0.42), Türkiye (0.41), and the US (0.40) show the highest variability — while export flows to Russia (CV 0.60) have become the most volatile of all, unsurprisingly given the sanctions-driven collapse (volatility).

Conclusion

The EU steel-nut market (CN 731816) has undergone significant structural transformation between 2015 and 2025. The overarching narrative is one of value-driven growth rather than volume expansion: export values nearly doubled while volumes stagnated, reflecting both global steel-price inflation and a deliberate shift toward higher-value product segments such as stainless-steel and self-locking nuts. Geopolitically, the period was marked by the consolidation of China and Taiwan as dominant import suppliers, the spectacular rise of the United States as the EU's primary export market, and the near-total loss of the Russian market following 2022 sanctions. Within the EU, Germany remains the undisputed production and trade hub, but Italy, France, and Poland have shown the fastest growth trajectories. Despite rising trade intensity and export propensity — signs of a healthy, outward-looking industry — the moderate increase in import volume concentration warrants attention as a potential vulnerability. Overall, the EU's steel-nut sector appears well-positioned in higher-value niches, though its dependence on Asian suppliers for commodity-grade products and exposure to geopolitical disruptions remain structural challenges.