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HSChapter 84
U.S. imports of parts and accessories for automatic data processing machines (HS 847330) totaled $20.1B in July 2026, traded with 73 countries.
Importers of Parts and Accessories for Automatic Data Processing Machines paid $41.1M in duties in July 2026 — an effective duty rate of 25% on $166.8M in dutiable value, based on actual customs collections rather than the published tariff schedule. Parts and Accessories for Automatic Data Processing Machines imports of $20.1B in July 2026 ran 54% above the year-to-date monthly average of $13.0B.
Last updated: July 2026 dataParts and accessories for ADP machines — covering everything from memory modules and printed circuit assemblies to mechanical subcomponents — are among the most widely traded technology goods and have been subject to Section 301 tariffs on imports from China. The US schedule separates printed circuit assemblies (8473302000) from non-PCA parts incorporating a CRT (8473309100) and general NESOI parts (8473305100), a distinction that affects both duty treatment and export-control screening under EAR. Taiwan leads US import supply, followed by Vietnam and South Korea, reflecting the geographic concentration of global electronics manufacturing.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
31.9K shipments/mo
A subassembly classifies as a part under 8473 when it is identifiable as suitable for use solely or principally with ADP machines and lacks the functional completeness to be classified as a machine in its own right. CBP has issued numerous rulings on this boundary — particularly for storage devices, interface cards, and power supplies — and importers should review applicable rulings or seek a binding ruling for novel configurations.
Section 301 tariffs under the current lists apply specifically to goods of Chinese origin. Parts manufactured in Vietnam and properly documented as Vietnamese-origin are not subject to Section 301, though CBP scrutinizes country-of-origin claims in electronics supply chains closely, particularly where Chinese components undergo further processing in third countries.
Subheading 1 of 5 in heading 8473
Subheading 847330 · $20.1B of $20.1B
ImportsExports
Imports
$20.1BYoY · Pro
Exports
$4.3BYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Taiwan and Vietnam together supply 58% of it.
customs district
destination
entry
rate provision · imports
89.2% enters free of duty; the effective duty rate is 0.20%.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8473301140 | Pts ADP Mch, Nt Incptg CRT,Prt Ct Asm.,Mry Modules | $12.5B | 0.15% | 0.61% | $18.5M |
| 8473301180 | Pts ADP Mch, Nt Incptng CRT,Prt CRT Assem.;nesoi | $6.5B | 0.14% | 0.56% | $8.9M |
| 8473305100 | Pts & Accessories of Mach of Heading of 8471,NESOI | $780.3M | 1.29% | 5.09% | $10.1M |
| 8473309100 | Oth Prts of ADP Mach and Units Incorporating A CRT | $311.7M | 0.87% | 3.44% | $2.7M |
| 8473302000 | Prts&acces of Printed Circuit Assemblies Head 8471 | $15.8M | 5.42% | 22.47% | $859K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8473300002 | Parts & Accessories for Machines of 8471 | $4.3B |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
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