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HSChapter 84
U.S. imports of non-numerically controlled boring-milling machines for metal removal (HS 845939) totaled $2.2M in May 2026, traded with 7 countries.
Importers of Non-Numerically Controlled Boring-Milling Machines for Metal Removal paid $39K in duties in May 2026 — an effective duty rate of 1.7% on $2.2M in dutiable value, based on actual customs collections rather than the published tariff schedule. Non-Numerically Controlled Boring-Milling Machines for Metal Removal imports of $2.2M in May 2026 ran 322% above the year-to-date monthly average of $529K.
Last updated: May 2026 dataConventional (non-NC) boring-milling machines remain in active use for job-shop and maintenance-repair operations where programmable control is not required, and Taiwan is the leading US supplier under this heading. The schedule separates used or rebuilt units (8459390010), new machines valued under $3,025 (8459390020), new horizontal-spindle machines at $3,025 and over (8459390040), and new non-horizontal-spindle machines at $3,025 and over (8459390050). Germany and Czech Republic also supply this heading, particularly for heavier floor-standing configurations. Importers should confirm whether a machine retains any legacy NC or DRO (digital readout) features, as such additions can affect classification.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Generally yes — a DRO provides positional feedback to the operator but does not automatically control axis movement, so the machine is still considered manually or conventionally controlled. True numerical control requires a controller that directs axis motion through programmed instructions. However, borderline cases should be reviewed with a licensed customs broker, as CBP has issued rulings on this distinction.
New machines invoiced below $3,025 enter under a separate tariff line (8459390020) from higher-value units, which are further split by spindle orientation. The threshold applies to the transaction value of the individual machine, so importers must ensure invoice values are accurately stated and supported by commercial documentation to avoid misclassification.
| Country | Imports | Exports | Balance |
|---|---|---|---|
| GERMANY | $2.0M | -- | -$2.0M |
| TAIWAN | $164K | -- | -$164K |
| CANADA | $82K | $12K | -$70K |
| CHINA | $6K | $13K | +$7K |
| UNITED KINGDOM | $11K | -- | -$11K |
Supplier Network
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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 |
|---|---|---|---|---|
| 8459390020 | COMB BOR-MIL MAC,MTL REMOV,EXC N/C,UNDER$3025,NEW | $5K | 39.20% | $2K |
| 8459390040 | BOR-MIL MAC,HORIZ SPIN,MTL REMOV,EXC N/C $3025OVER | $0 | -- | -- |
| 8459390050 | BOR-MIL MAC,EX HOR SPIN,MTL REMOV,EX N/C OV $3025 | $0 | -- | -- |
COMB BOR-MIL MAC,MTL REMOV,EXC N/C,UNDER$3025,NEW
BOR-MIL MAC,HORIZ SPIN,MTL REMOV,EXC N/C $3025OVER
BOR-MIL MAC,EX HOR SPIN,MTL REMOV,EX N/C OV $3025
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8459390050 | BOR-MIL MAC,EX HOR SPIN,MTL REMOV,EX N/C OV $3025 | $13K |
| 8459390020 | COMB BOR-MIL MAC,MTL REMOV,EXC N/C,UNDER$3025,NEW | $12K |
| 8459390010 | COMB BORING-MILLING MACH, MTL REMOV, EXC N/C, USED | $0 |
| 8459390040 | BOR-MIL MAC,HORIZ SPIN,MTL REMOV,EXC N/C $3025OVER | $0 |
BOR-MIL MAC,EX HOR SPIN,MTL REMOV,EX N/C OV $3025
1 no
COMB BOR-MIL MAC,MTL REMOV,EXC N/C,UNDER$3025,NEW
97 no
COMB BORING-MILLING MACH, MTL REMOV, EXC N/C, USED
BOR-MIL MAC,HORIZ SPIN,MTL REMOV,EXC N/C $3025OVER
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 |
|---|---|---|---|
| Oregon | -- | $21K | +$21K |
| California | $5K | -- | -$5K |
| Unidentified | -- | $4K | +$4K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| SEATTLE, WA | -- | $13K | +$13K |
| SWEETGRASS, MT | -- | $8K | +$8K |
| LOS ANGELES, CA | $5K | -- | -$5K |