Harmonized System
U.S. imports of Non-Numerically Controlled Boring-Milling Machines for Metal Removal (HS 845939) totaled $316K in August 2026, imported from 8 countries.
Importers of Non-Numerically Controlled Boring-Milling Machines for Metal Removal paid $46K in duties in August 2026, an average duty rate of 14.67% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Non-Numerically Controlled Boring-Milling Machines for Metal Removal imports of $316K in August 2026 ran 23% below the year-to-date monthly average of $410K.
Last updated: August 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.
6 import shipments a month
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.
Subheading 10 of 12 in heading 8459
Subheading 845939 · $316K of $37.2M
Trade Directory
List your company under HS 845939 — Non-Numerically Controlled Boring-Milling Machines for Metal Removal, so the companies trading it can find you. Be the first supplier listed.
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 |
|---|---|---|---|---|---|
| 8459390040 | Bor-Mil Mac, Horiz Spin, Mtl Remov, Exc N/C $3025over | $160K | 10.00% | 100.00% | $16K |
| 8459390050 | Bor-Mil Mac, Ex Hor Spin, Mtl Remov, Ex N/C Ov $3025 | $110K | 10.00% | 100.00% | $11K |
| 8459390020 | Comb Bor-Mil Mac, Mtl Remov, Exc N/C, Under$3025, New | $47K | 41.70% | 100.00% | $19K |
HS10 export codes under this HS6 parent, each with its own page. 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 | $60K |
| 8459390020 | Comb Bor-Mil Mac, Mtl Remov, Exc N/C, Under$3025, New | $15K |
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.
ImportsExports
Imports
$316KYoY · free account
Exports
$75KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $4.1M of Non-Numerically Controlled Boring-Milling Machines for Metal Removal and exported $1.5M.
Fewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Czech Republic and Taiwan together supply 85% of it. China pays 41.7% duty; Czech Republic 10.0%.
customs district
destination
entry
rate provision · imports
duty collected equals 14.67% of imports for consumption.