Harmonized System
U.S. imports of Weighing Machine Weights & Parts of Weighing Machinery (HS 842390) totaled $9.5M in September 2026, imported from 47 countries.
Importers of Weighing Machine Weights & Parts of Weighing Machinery paid $1.4M in duties in September 2026, an average duty rate of 14.73% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: September 2026 dataJapan leads US imports under this heading, followed by China and Germany, reflecting the precision-engineering demands of industrial and laboratory weighing equipment. The US schedule distinguishes digital weight indicators (8423900040) from other parts (8423900080), electronic gauging weights not for motor vehicles (8423901000), and a catch-all for weights and parts not elsewhere specified (8423909000). Correct classification between a complete digital indicator and a subassembly part is a recurring customs challenge, since the two lines carry different duty treatment. Importers sourcing load cells, calibration weights, or indicator housings should confirm whether the article functions independently or solely as a component.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
841 import shipments a month
A digital weight indicator that functions as a standalone display and processing unit for a scale system is classified under 8423900040. If the article is a subassembly or component that cannot operate independently as an indicator, it typically falls under the general parts line 8423900080. Consult a licensed customs broker when the article straddles both descriptions.
Yes — physical calibration and test weights of all kinds fall within heading 8423, and the residual line 8423909000 covers weights and parts not elsewhere specified. However, precision weights used in laboratory balances may also attract scrutiny under metrology regulations depending on their end use.
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Subheading 4 of 7 in heading 8423
Subheading 842390 · $9.5M of $76.1M
ImportsExports
Imports
$9.5MYoY · free account
Exports
$6.9MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to September 2026, the U.S. imported $112.1M of Weighing Machine Weights & Parts of Weighing Machinery and exported $70.2M.
Through September 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8423901000 | Prts of Weigh Mach Elect Gaug Weigh Nt for Mot Veh | $4.9M | 12.39% | 89.07% | $608K |
| 8423909000 | Weights, Parts of Weighing Machinery, NESOI | $3.8M | 14.51% | 90.74% | $556K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8423900080 | Parts of Weighing Mach Exc Digital Weight Indicat | $3.6M |
| 8423900040 | Digital Weight Indicators | $1.1M |
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.
Imports · September 2026
origin
China pays 38.5% duty; Canada 0.4%.
customs district
destination
entry
rate provision · imports
11.1% enters free of duty; duty collected equals 14.73% of imports for consumption.