Loading...
SITCSection 7
U.S. imports of insulated electric winding wire (SITC 77311) totaled $96.5M in July 2026, traded with 57 countries.
Importers of Insulated Electric Winding Wire paid $7.4M in duties in July 2026 — an effective duty rate of 19% on $38.7M in dutiable value, based on actual customs collections rather than the published tariff schedule. Insulated Electric Winding Wire imports of $96.5M in July 2026 ran 24% above the year-to-date monthly average of $78.0M.
Last updated: July 2026 dataEnameled, varnished, or otherwise insulated winding wire is a foundational input for motors, transformers, generators, and inductors across virtually every electromechanical industry. The insulation type, conductor material (most commonly copper or aluminum), and wire gauge are the primary specification variables that drive both commercial pricing and technical suitability. Copper winding wire in particular is a globally traded commodity sensitive to LME copper price movements, and importers managing transformer or motor manufacturing supply chains track both metal prices and lead times closely.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
2.8K shipments/mo
Basic heading 159 of 642 in section 7
Basic heading 77311 · $96.5M of $175.6B
Winding wire is specifically designed for use in coils—motors, transformers, and similar electromagnetic devices—and is characterized by a thin, uniform insulating coating (enamel, varnish, or similar) applied to enable tight winding. General-purpose insulated conductors intended for power transmission or wiring installations are classified in separate conductor headings, not here.
At the SITC level, both copper and aluminum winding wires fall within this heading. However, at the HTS 10-digit level used for US entry, the conductor material is a key subdivision criterion. Importers should confirm the specific HTS subheading with their broker, as duty rates and any applicable trade-remedy orders may differ by material.
Supplier Network
Get discovered by U.S. importers searching for HS 77311 — Insulated Electric Winding Wire. Be the first supplier listed.
Imports · July 2026
origin
Mexico and China together supply 62% of it.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$96.5MYoY · Pro
Exports
$54.9MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.