U.S. imports of Boring Machines for Metal (Not Elsewhere Specified) (SITC 73146) totaled $2.8M in August 2026, imported from 12 countries.
Importers of Boring Machines for Metal (Not Elsewhere Specified) paid $298K in duties in August 2026, an average duty rate of 10.62% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Boring Machines for Metal (Not Elsewhere Specified) imports of $2.8M in August 2026 ran 25% above the year-to-date monthly average of $2.2M.
Last updated: August 2026 dataJig borers, line-boring machines, and other dedicated boring equipment that cannot be classified as boring-milling machines or way-type unit head machines fall under SITC 73146. The heading's residual scope means classification depends on confirming that the machine performs boring as its primary function without a significant integrated milling capability that would push it into the boring-milling headings. These machines are critical in precision toolroom and die-making environments where bore geometry tolerances are tighter than standard machining centers can reliably achieve.
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13 import shipments a month
The distinction turns on whether the machine has meaningful integrated milling capability. A machine designed and marketed primarily for boring — with limited or no milling function — belongs in 73146. If the machine is designed to perform both boring and milling as co-equal operations, it belongs in the boring-milling headings (73144 for CNC, 73145 for non-CNC). Manufacturer catalogs and the machine's spindle and table specifications are the primary classification evidence.
A jig borer with CNC control but without significant milling capability remains in the boring-machine category. However, if the CNC jig borer also performs milling as a designed function, it may shift to the CNC boring-milling heading 73144. The functional design intent — not merely the presence of CNC control — governs the classification decision.
Basic heading 73146 · $2.8M of $172.0B
Imports · August 2026
origin
Italy and South Korea together supply 81% of it. South Korea pays 12.5% duty; Canada 0.0%.
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.
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ImportsExports
Imports
$2.8MYoY · free account
Exports
$93KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $22.6M of Boring Machines for Metal (Not Elsewhere Specified).
Through August 2026 · exports 10 of 12 months reported. Source: U.S. Census Bureau.