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HSChapter 84
U.S. imports of unit construction (single-station) machines for working metal (HS 845720) totaled $2.1M in April 2026, traded with 5 countries.
Importers of Unit Construction (Single-Station) Machines for Working Metal paid $277K in duties in April 2026 — an effective duty rate of 14% on $2.0M in dutiable value, based on actual customs collections rather than the published tariff schedule. Unit Construction (Single-Station) Machines for Working Metal imports of $2.1M in April 2026 ran 122% above the year-to-date monthly average of $942K.
Last updated: April 2026 dataSingle-station unit construction machines perform a fixed set of metalworking operations — typically drilling, tapping, or reaming — at one workstation, making them a cost-effective choice for dedicated production lines in automotive and heavy-equipment manufacturing. Spain and Italy lead US import supply under this heading, with China and Canada also present, pointing to a mix of European precision builders and lower-cost Asian sources. The US schedule separates numerically controlled (N/C) units (8457200010) from conventional non-N/C machines (8457200090), a distinction that affects both duty treatment and end-use suitability assessments. Buyers evaluating N/C versus non-N/C configurations should confirm control-system specifications with the manufacturer before import classification.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
A machining center (heading 8457.10) integrates multiple operations with automatic tool changing and is designed for flexible, multi-step machining. A unit construction machine (8457.20) is purpose-built for a fixed sequence of operations at one station without tool-change capability. If a machine can perform varied operations via ATC, it is more likely a machining center; if it is dedicated to a single production task, it falls under 8457.20. When the distinction is unclear, a binding ruling from CBP is advisable.
Yes. Imports from China under this heading may be subject to Section 301 tariffs in addition to the base MFN duty rate. Importers should verify the current Section 301 list status and any applicable exclusions before entry, as the scope and exclusion landscape has changed over time. A licensed customs broker can confirm the current duty stack for a specific HTS line and origin.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 8457200010 | UNIT CONSTRUCTION MACHINES (SINGLE STATION), N/C | $1.8M | 13.30% | $235K |
| 8457200090 | UNIT CONSTRUCTION MACH (SINGLE STATION), EXC N/C | $331K | 16.75% | $43K |
UNIT CONSTRUCTION MACHINES (SINGLE STATION), N/C
UNIT CONSTRUCTION MACH (SINGLE STATION), EXC N/C
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8457200090 | UNIT CONSTRUCTION MACH (SINGLE STATION), EXC N/C | $87K |
| 8457200010 | UNIT CONSTRUCTION MACHINES (SINGLE STATION), N/C | $0 |
UNIT CONSTRUCTION MACH (SINGLE STATION), EXC N/C
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UNIT CONSTRUCTION MACHINES (SINGLE STATION), N/C
DIGITAL PROCESSING UNITS, N.E.S.O.I.
HS 847150
PARTS & ACCESSORIES FOR ADP MACHINES & UNITS
HS 847330
PORT DIGTL AUTOMATIC DATA PROCESS MACH NOT > 10 KG
HS 847130
AUTOMATIC DATA PROCESSING STORAGE UNITS, N.E.S.O.I
HS 847170
AUTOMATIC DATA PROCESSING UNITS, N.E.S.O.I.
HS 847180
TURBOJET AND TURBOPROLLER PARTS
HS 841191
| State | Imports | Exports | Balance |
|---|---|---|---|
| Michigan | $1.8M | -- | -$1.8M |
| Georgia | $138K | -- | -$138K |
| California | -- | $87K | +$87K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NEWARK, NJ | $1.7M | -- | -$1.7M |
| CHICAGO, IL | $146K | -- | -$146K |
| SWEETGRASS, MT | -- | $87K | +$87K |