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HSChapter 84
U.S. imports of numerically controlled boring machines for metal removal (other) (HS 845941) totaled $2.4M in April 2026, traded with 6 countries.
Importers of Numerically Controlled Boring Machines for Metal Removal (Other) paid $65K in duties in April 2026 — an effective duty rate of 14% on $457K in dutiable value, based on actual customs collections rather than the published tariff schedule. Numerically Controlled Boring Machines for Metal Removal (Other) imports of $2.4M in April 2026 ran 32% above the year-to-date monthly average of $1.8M.
Last updated: April 2026 dataDedicated NC boring machines — distinct from boring-milling combinations — are precision tools used in cylinder-bore, bearing-housing, and large-component machining across automotive, aerospace, and heavy-equipment sectors. South Korea leads US imports under this heading, with Italy and Japan as significant secondary sources. The US schedule covers used or rebuilt units (8459410010), new machines under $3,025 (8459410020), new vertical NC boring machines over $3,025 (8459410030), and new non-vertical NC machines over $3,025 (8459410090). Vertical versus non-vertical spindle orientation is the primary classification axis for higher-value new equipment, and machine drawings or manufacturer specs are typically required to confirm this at entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Manufacturer technical specifications, machine drawings, and sales literature that clearly identify spindle orientation are the most reliable supporting documents. CBP may also request photos or a technical description from the manufacturer. Importers should retain these records as part of the entry package to support the classification if audited.
South Korea leads supply of dedicated NC boring machines, reflecting its strong machine-tool manufacturing base for automotive and heavy-industry applications. By contrast, NC boring-milling machines are dominated by Italy and Switzerland, where manufacturers focus on high-precision multi-function machining centers. This divergence means buyers sourcing both machine types may be managing separate supplier relationships and duty exposures.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| JAPAN | $1.8M | -- | -$1.8M |
| ITALY | $457K | -- | -$457K |
| CANADA | $91K | $20K | -$71K |
| MEXICO | -- | $7K | +$7K |
| KOREA, SOUTH | -- | -- | -- |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 8459410030 | BORING MAC,VERT,MTL REMOV,N/C, OVER $3025,NEW | $2.0M | 14.20% | $24K |
| 8459410090 | BORING MACH,EX VERT,MTL REMOV, N/C,OVER $3025 NEW | $379K | 14.20% | $41K |
| 8459410020 | OTH BRNG MACH,NUM CON, METAL RMVING,UNDR $3025 NEW | $0 | -- | -- |
BORING MAC,VERT,MTL REMOV,N/C, OVER $3025,NEW
BORING MACH,EX VERT,MTL REMOV, N/C,OVER $3025 NEW
OTH BRNG MACH,NUM CON, METAL RMVING,UNDR $3025 NEW
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8459410090 | BORING MACH,EX VERT,MTL REMOV, N/C,OVER $3025 NEW | $20K |
| 8459410020 | OTH BRNG MACH,NUM CON, METAL RMVING,UNDR $3025 NEW | $7K |
BORING MACH,EX VERT,MTL REMOV, N/C,OVER $3025 NEW
1 no
OTH BRNG MACH,NUM CON, METAL RMVING,UNDR $3025 NEW
30 no
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
| Port | Imports | Exports | Balance |
|---|---|---|---|
| BALTIMORE, MD | $2.2M | -- | -$2.2M |
| SAVANNAH, GA | $120K | -- | -$120K |
| BLAINE, WA | $91K | -- | -$91K |