8503.00—Parts suitable for use solely or principally with the machines of heading 8501 or 8502General duty rate
Free – 6.5%
Across 11 10-digit lines; pick a line below for the exact rate
Coverage on this page
HTS 8503.00 is a 6-digit subheading of the U.S. Harmonized Tariff Schedule covering Parts suitable for use solely or principally with the machines of heading 8501 or 8502. It sits in Chapter 85: Electrical machinery and equipment and parts thereof; sound recorders and reproducers; television image and sound recorders and reproducers, and parts and accessories of such articles, Section XVI: Machinery and Mechanical Appliances; Electrical Equipment; Parts Thereof; Sound Recorders and Reproducers, Television Image and Sound Recorders and Reproducers, and Parts and Accessories of Such Articles and rolls up 11 10-digit statistical lines, with general duty rates ranging from Free to 6.5%. 21 Chapter 99 flags link to one or more child lines (10 active, 11 expired), and 18 potentially relevant AD/CVD order flags link to at least one child line.
Pick a line to view its exact rate and estimate duties and customs fees
8503.00.20.00Commutators2.4%8503.00.35.00For motors of under 18.65 W6.5%8503.00.45.00For generators suitable for use on aircraftFree8503.00.65.00Other3%8503.00.75.00For motors of under 18.65 W6.5%8503.00.90.00For generators suitable for use on aircraftFree8503.00.95.20Parts of motors3%8503.00.95.46For AC generators (alternators) classified in statistical reporting number 8501.64.01103%8503.00.95.50Other3%8503.00.95.70Parts of wind-powered generating sets classified in subheading 8502.31.003%8503.00.95.80Other3%Provisions linked to one or more lines under 8503.00; applicability depends on origin, product facts, claims, and entry date
| Code | Authority | Rate |
|---|---|---|
| 9903.82.05 | section_232Active | 15% |
| 9903.82.13 | section_232Active | 0% |
| 9903.81.91 | section_232Expired | The duty provided in the applicable subheading + a duty of 50% upon the value of the steel content. |
| 9903.82.15 | section_232Active | 10% |
| 9903.81.92 | section_232Expired | The duty provided in the applicable subheading. |
| 9903.81.98 | section_232Expired | The duty provided in the applicable subheading + 25% |
| 9903.80.03 | section_232Expired | The duty provided in the applicable subheading + 25% |
| 9903.81.86 | section_232Expired | The duty provided in the applicable subheading + 25% |
| 9903.81.84 | section_232Expired | The duty provided in the applicable subheading + 25% |
| 9903.88.01 | section_301Active | The duty provided in the applicable subheading plus 25% |
| 9903.88.11 | section_301Active | The duty provided in the applicable subheading |
| 9903.88.14 | section_301Active | The duty provided in the applicable subheading |
| 9903.85.08 | section_232Expired | The duty provided in the applicable subheading + a duty of 50% upon the value of the aluminum content. |
| 9903.85.15 | section_232Expired | The duty provided in the applicable subheading + a duty of 25% upon the value of the aluminum content |
| 9903.85.09 | section_232Expired | The duty provided in the applicable subheading. |
| 9903.82.06 | section_232Active | 10% |
| 9903.85.01 | section_232Expired | The duty provided in the applicable subheading + 10% |
| 9903.85.68 | section_232Active | The duty provided in the applicable subheading + 200% |
| 9903.85.70 | section_232Expired | The duty provided in the applicable subheading + 200% |
| 9903.88.02 | section_301Active | The duty provided in the applicable subheading + 25% |
| 9903.88.12 | section_301Active | The duty provided in the applicable subheading |
HTS-linked orders for one or more lines under 8503.00; written scope controls whether a product is covered
A-570-158ADChinaAluminum Extrusions from China (2024 Investigation)A-331-804ADEcuadorAluminum ExtrusionsA-560-840ADIndonesiaAluminum ExtrusionsA-475-846ADItalyAluminum ExtrusionsA-580-918ADKorea, Republic ofAluminum ExtrusionsA-549-847ADThailandAluminum ExtrusionsA-583-874ADTaiwanAluminum ExtrusionsA-301-806ADColombiaAluminum ExtrusionsA-557-826ADMalaysiaAluminum ExtrusionsA-489-850ADTürkiyeAluminum ExtrusionsA-533-920ADIndiaAluminum ExtrusionsA-552-837ADVietnamAluminum ExtrusionsC-570-159CVDChinaAluminum ExtrusionsC-560-841CVDIndonesiaAluminum ExtrusionsC-489-851CVDTürkiyeAluminum ExtrusionsA-520-810ADUnited Arab EmiratesAluminum ExtrusionsC-201-861CVDMexicoAluminum ExtrusionsA-201-860ADMexicoAluminum ExtrusionsHTS 8503.00 is a 6-digit subheading of the U.S. Harmonized Tariff Schedule covering Parts suitable for use solely or principally with the machines of heading 8501 or 8502. It belongs to Chapter 85 and rolls up 11 10-digit statistical lines that brokers actually file at entry.
General (Column 1) duty rates for the 10-digit lines under HTS 8503.00 range from Free to 6.5%. The exact rate depends on the specific 10-digit statistical line — pick a line below to see its full rate detail.
Tandom links section_232 provision 9903.82.05 to HTS 8503.00. Its published rate notation is 15%, and its status on 2026-08-30 is active. 20 additional Chapter 99 flags also link to this code. A flag is not a shipment-level determination; check origin, product facts, claims, and entry date.
U.S. Customs requires entries to be filed at the 10-digit statistical level — the broader subheading HTS 8503.00 is not directly fileable. Match your product description to the most specific 10-digit line in the list on this page; if multiple lines could apply, the General Rules of Interpretation (GRIs) and chapter notes determine which one governs.
Tandom links 18 potentially relevant AD/CVD order flags to at least one 10-digit line under HTS 8503.00. An HTS link is a screening aid; whether a shipment is covered depends on the order's written product scope and country of origin. Use the linked lookup to review the case materials.
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