U.S. imports of Numerically Controlled Boring Machines for Metal Removal (Other) (HS 845941) totaled $2.8M in August 2026, imported from 11 countries.
Importers of Numerically Controlled Boring Machines for Metal Removal (Other) paid $294K in duties in August 2026, an average duty rate of 10.57% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Numerically Controlled Boring Machines for Metal Removal (Other) imports of $2.8M in August 2026 ran 41% above the year-to-date monthly average of $2.0M.
Last updated: August 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.
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11 import shipments a month
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.
ImportsExports
Imports
$2.8MYoY · free account
Exports
$9KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $19.8M of Numerically Controlled Boring Machines for Metal Removal (Other) and exported $4.5M.
Through August 2026. Source: U.S. Census Bureau.
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Subheading 4 of 12 in heading 8459
Subheading 845941 · $2.8M of $37.2M
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 |
|---|---|---|---|---|---|
| 8459410090 | Boring Mach, Ex Vert, Mtl Remov, N/C, Over $3025 New | $2.8M | 10.57% | 97.27% | $292K |
| 8459410020 | Oth Brng Mach, Num Con, Metal Rmving, Undr $3025 New | $24K | 10.00% | 100.00% | $2K |
| 8459410010 | Oth Bring Mchn, Num Con, Metl Remving, Usd or Rblt | — | -- | -- | -- |
| 8459410030 | Boring Mac, Vert, Mtl Remov, N/C, Over $3025, New | — | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8459410020 | Oth Brng Mach, Num Con, Metal Rmving, Undr $3025 New | $9K |
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 · August 2026
origin
Italy and South Korea together supply 82% of it. South Korea pays 12.5% duty; Canada 0.0%.
customs district
destination
entry
rate provision · imports
2.7% enters free of duty; duty collected equals 10.57% of imports for consumption.