Helical Springs of Iron or Steel

For helical springs not used in motor vehicle suspension, the US schedule uses wire cross-section as the primary breakout: springs of wire under 5.1 mm are split between those destined for use in bedding or furniture (heading 9404 articles, line 7320205010) and all other uses (7320205020); springs of wire from 5.1 mm to under 12.7 mm fall under 7320205045; and larger-wire springs are captured in 7320205060. Accurate measurement and end-use documentation are therefore essential to correct classification.

Because helical springs are steel-derivative articles, importers should obtain mill certificates or equivalent documentation confirming the steel composition and country of melt and pour. This supports both Section 232 compliance and any USMCA origin claims for Mexico- or Canada-sourced springs. A licensed customs broker can advise on current exclusion requests or product-specific rulings that may affect duty liability.