Nuts

CN code 7318 16 covers nuts of iron or steel. These include hex nuts, flange nuts, self-locking nuts (nyloc), castle nuts, wing nuts, square nuts, eye nuts and other internally threaded nuts. Nuts are essential components of bolted connections and pair with bolts under CN 7318 15. Classification requires internal thread and nut form of steel material. Washers fall under CN 7318 21 or 7318 22. Standards: ISO 4032, ISO 4034, ISO 7040, EN 15048 and EN 14399 (structural with CE).

Importing steel nuts under CN 7318 16 into the EU is governed by the Union Customs Code. Since 2026, CBAM applies. Structural steel nuts require CE under EN 15048 or EN 14399 per CPR. Nut strength class must match bolt class (e.g. class 8 nut for 8.8 bolt). Required documents include a commercial invoice, manufacturer certificate, CE declaration and certificate of origin. AD measures should be verified in TARIC.

Steel nuts under CN 7318 16 are subject to the same AD measures as bolts - the EU maintains AD duties on fasteners from China. AD from India and Turkey may also apply. Russia/Belarus imports prohibited. Safeguard with 25 percent surcharge. The nut market is closely linked to the bolt market. Major suppliers from China, Taiwan, India and Turkey. Preferential rates may reduce costs. Total cost includes duty, AD, safeguard, CBAM and VAT.

CN code 7318 16 of the Combined Nomenclature covers steel nuts within Chapter 73, which deals with articles of iron or steel. Classification in this chapter is based on the type of article, its intended use, manufacturing method (casting, forging, welding, stamping) and base material (cast iron, non-alloy steel, stainless steel or alloy steel). Correct classification requires analysis of technical documentation. Where classification is uncertain, importers can obtain Binding Tariff Information (BTI) ruling from customs authorities, valid for three years throughout the EU.