U.S. imports of Numerically Controlled Milling Machines for Metal (Not Elsewhere Specified) (SITC 73153) totaled $15.4M in August 2026, imported from 18 countries.
Importers of Numerically Controlled Milling Machines for Metal (Not Elsewhere Specified) paid $739K in duties in August 2026, an average duty rate of 4.79% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Numerically Controlled Milling Machines for Metal (Not Elsewhere Specified) imports of $15.4M in August 2026 ran 25% above the year-to-date monthly average of $12.3M.
Last updated: August 2026 dataBed-type, planer-type, and other CNC milling configurations that are not knee-type and not classifiable as machining centers fall into SITC 73153 — a heading that captures a wide range of high-production milling platforms used in aerospace structural machining, die and mold production, and large-part manufacturing. The residual scope of this heading makes it essential to confirm that the machine lacks the automatic tool-change capability that would push it into the machining center category, and that it is not a knee-type unit covered by 73151. Section 301 tariff measures have affected imports of CNC machine tools from certain origins, making origin verification a key step in landed-cost analysis.
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33 import shipments a month
The presence of an automatic tool changer (ATC) is the primary indicator of a machining center. A CNC milling machine without an ATC — even if it has a large table, multiple axes, and high-speed spindle — generally remains in the milling machine heading 73153. If the machine has an ATC and is designed for multi-operation flexible machining, it belongs in the machining center heading. Manufacturer specifications and the machine's operational design intent are the key classification evidence.
Gantry and planer-type configurations with ATC capability are frequently contested at classification. The importer should obtain detailed technical specifications — particularly regarding tool-change system design, number of controlled axes, and the manufacturer's own product categorization — and consider requesting a CBP binding ruling before importation. A licensed customs broker with machine-tool experience can help assess the classification risk and prepare the ruling request.
Basic heading 371 of 642 in section 7
Basic heading 73153 · $15.4M of $172.0B
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Imports · August 2026
origin
Spain and Austria together supply 80% of it. Japan pays 12.5% duty; Austria <0.1%.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$15.4MYoY · free account
Exports
$1.4MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $120.5M of Numerically Controlled Milling Machines for Metal (Not Elsewhere Specified).
Through August 2026 · exports 10 of 12 months reported. Source: U.S. Census Bureau.