Standard International Trade Classification
U.S. exports of Parts for Electrical Resistors (Excluding Heating Resistors) (SITC 77238) totaled $5.4M in August 2026.
Importers of Parts for Electrical Resistors (Excluding Heating Resistors) paid $250K in duties in August 2026, an average duty rate of 8.92% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataDedicated parts for rheostats, potentiometers, and other non-heating electrical resistors — such as resistance elements, wiper contacts, shafts, and housings — are traded separately from finished resistors and fall under this heading. The explicit exclusion of heating resistor parts is a key classification boundary: elements intended for electric heaters, ovens, or similar thermal applications belong elsewhere. For importers supplying resistor repair depots or OEM assembly operations, correctly separating parts from finished assemblies is essential, as the two can carry different duty rates and Section 301 exposure. Detailed parts lists and assembly diagrams are the most effective documentation for supporting classification at entry.
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303 import shipments a month
The key is demonstrating the part's intended function: a resistance element designed for a potentiometer or rheostat — not for generating heat — should be supported by a technical datasheet, assembly drawing, or purchase order referencing the parent resistor model. If the part could plausibly serve a heating application, a binding ruling request to CBP before importation is advisable.
Yes. The heading covers parts specifically designed for non-heating electrical resistors regardless of the material of the part itself. A metal shaft or wiper contact that is identifiable as a part for a potentiometer or rheostat qualifies here. The critical factor is that the part must be dedicated to a resistor function rather than being a general-purpose mechanical component.
Basic heading 77238 · $5.4M of $76.2B
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Exports · August 2026
destination
Mexico and Israel together take 57% of it.
customs district
Census does not publish district detail for this classification system.
origin
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$2.9MYoY · free account
Exports
$5.4MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $31.6M of Parts for Electrical Resistors (Excluding Heating Resistors).
Through August 2026 · exports 10 of 12 months reported. Source: U.S. Census Bureau.