Residual non-alloy steel wire not captured by the uncoated or zinc-coated headings — such as wire coated with copper, tin, or other non-zinc base metals, or wire with specialized surface treatments — is classified here as a catch-all. Correct placement in this heading versus adjacent SITC codes depends on the specific coating material and whether the wire meets the definitions of the more specific headings. Section 232 tariffs apply to steel wire articles generally, and the residual nature of this heading means classification disputes are more common, making detailed technical documentation essential. Importers dealing with specialty-coated or multi-process wire should obtain a binding ruling when classification is uncertain.

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