HSChapter 84
U.S. imports of numerically controlled boring-milling machines for metal removal (HS 845931) totaled $17.1M in April 2026, traded with 9 countries.
Importers of Numerically Controlled Boring-Milling Machines for Metal Removal paid $2.0M in duties in April 2026 โ an effective duty rate of 14% on $13.8M in dutiable value, based on actual customs collections rather than the published tariff schedule. Numerically Controlled Boring-Milling Machines for Metal Removal imports of $17.1M in April 2026 ran 82% above the year-to-date monthly average of $9.4M.
Last updated: April 2026 dataNumerically controlled boring-milling machines occupy a premium tier of the metalworking equipment market, serving aerospace, energy, and heavy-equipment manufacturers that require simultaneous boring and milling in a single setup. Italy and Switzerland lead US supply under this heading, reflecting the European precision-machine-tool industry's dominance in high-tolerance horizontal spindle equipment. The US schedule distinguishes horizontal-spindle table-type machines (8459310010), other horizontal-spindle configurations (8459310040), non-horizontal-spindle new machines (8459310070), and used or rebuilt units (8459310005). Buyers should verify spindle orientation and table configuration carefully, as misclassification between these lines is a common audit finding.
AI-written summary of the official U.S. Census Bureau trade figures on this page โ verify before relying on it.
Table-type machines feature a workpiece table that moves in multiple axes relative to a fixed or traversing spindle head, enabling precise positioning of large workpieces. Non-table-type horizontal-spindle machines use different workpiece-holding or column arrangements. The distinction directly determines which 10-digit HTS line applies โ 8459310010 for table-type versus 8459310040 for other horizontal-spindle configurations โ so machine specifications and manufacturer documentation are essential at entry.
Both countries host long-established precision machine-tool clusters โ Italy's Lombardy and Piedmont regions and Switzerland's industrial corridor โ that specialize in large-format, high-tolerance boring-milling centers. Their machines are widely specified by aerospace and heavy-industry buyers who prioritize accuracy and after-sales support over unit price, sustaining strong import volumes despite premium pricing.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| GERMANY | $5.9M | -- | -$5.9M |
| SWITZERLAND | $5.8M | -- | -$5.8M |
| ITALY | $4.6M | -- | -$4.6M |
| MEXICO | -- | $820K | +$820K |
| CZECH REPUBLIC | $320K | -- | -$320K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 8459310040 | BOR-MIL MAC,HORIZ SPN,EX TBL TYP,MTL REMOV,N/C,NEW | $9.0M | 14.20% | $823K |
| 8459310070 | BOR-MIL MAC,EXC HORIZ SPIN,MTL REMOV,N/C,NEW,NESOI | $7.6M | 14.20% | $1.1M |
| 8459310010 | BOR-MIL MAC,HORIZ SPIN,TABLE TYP,MTL REMOV,N/C,NEW | $423K | 14.20% | $60K |
| 8459310005 | COMB BORING-MILLING MACH, METAL REMOV, N/C, USED | $0 | -- | -- |
BOR-MIL MAC,HORIZ SPN,EX TBL TYP,MTL REMOV,N/C,NEW
BOR-MIL MAC,EXC HORIZ SPIN,MTL REMOV,N/C,NEW,NESOI
BOR-MIL MAC,HORIZ SPIN,TABLE TYP,MTL REMOV,N/C,NEW
COMB BORING-MILLING MACH, METAL REMOV, N/C, USED
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8459310010 | BOR-MIL MAC,HORIZ SPIN,TABLE TYP,MTL REMOV,N/C,NEW | $820K |
| 8459310005 | COMB BORING-MILLING MACH, METAL REMOV, N/C, USED | $159K |
| 8459310040 | BOR-MIL MAC,HORIZ SPN,EX TBL TYP,MTL REMOV,N/C,NEW | $0 |
| 8459310070 | BOR-MIL MAC,EXC HORIZ SPIN,MTL REMOV,N/C,NEW,NESOI | $0 |
BOR-MIL MAC,HORIZ SPIN,TABLE TYP,MTL REMOV,N/C,NEW
1 no
COMB BORING-MILLING MACH, METAL REMOV, N/C, USED
3 no
BOR-MIL MAC,HORIZ SPN,EX TBL TYP,MTL REMOV,N/C,NEW
BOR-MIL MAC,EXC HORIZ SPIN,MTL REMOV,N/C,NEW,NESOI
TURBOJET AND TURBOPROLLER PARTS
HS 841191
| State | Imports | Exports | Balance |
|---|---|---|---|
| Michigan | $7.6M | -- | -$7.6M |
| Illinois | $6.0M | -- | -$6.0M |
| California | $1.6M | $820K | -$823K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NORFOLK-NEWPORT NEWS, VA | $5.4M | -- | -$5.4M |
| NEWARK, NJ | $4.3M | -- | -$4.3M |
| TACOMA, WA | $3.4M | -- | -$3.4M |