U.S. imports of Thread Rolling Machines for Metal Working (HS 846320) totaled $2.4M in August 2026, imported from 11 countries.
Importers of Thread Rolling Machines for Metal Working paid $144K in duties in August 2026, an average duty rate of 5.90% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Thread Rolling Machines for Metal Working imports of $2.4M in August 2026 ran 125% above the year-to-date monthly average of $1.1M.
Last updated: August 2026 dataThread rolling machines form external threads on bolts, screws, and studs by pressing hardened dies against a rotating blank — a cold-forming process that produces stronger threads than cutting because it work-hardens the material and preserves grain flow. Italy leads US imports of this equipment, with Germany and China also significant sources. The US schedule (lines 8463200040 through 8463200080) separates entries by condition and a $3,025 value threshold for new machines. Demand is closely tied to fastener manufacturing output, making import volumes a useful leading indicator of industrial and construction activity.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
18 import shipments a month
The HS nomenclature gives thread rolling its own subheading (846320) because the process — forming threads by plastic deformation rather than cutting — is distinct from both general pressing and material-removal operations. This specificity matters for classification: a machine that cuts threads (e.g., a thread-cutting lathe) falls under a different heading entirely, while a machine that rolls threads belongs here regardless of whether it also performs other forming operations.
For used equipment, CBP expects the commercial invoice to reflect fair market value rather than original cost. Supporting documents such as an independent appraisal, a dealer's market quotation for comparable used machines, or the seller's depreciation schedule help substantiate the declared value and reduce the risk of a CBP value inquiry or reappraisement.
Subheading 4 of 4 in heading 8463
Subheading 846320 · $2.4M of $24.2M
ImportsExports
Imports
$2.4MYoY · free account
Exports
$222KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $15.5M of Thread Rolling Machines for Metal Working and exported $6.2M.
Through August 2026. Source: U.S. Census Bureau.
Trade Directory
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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 |
|---|---|---|---|---|---|
| 8463200080 | Thread Rolling Mach, Metal Forming, Ov $3025, New | $2.2M | 6.13% | 99.63% | $132K |
| 8463200060 | Thread Rolling Mach, Metal Forming, Un $3025, New | $233K | 2.02% | 14.00% | $5K |
| 8463200040 | Thread Rolling Machines, Metal Forming, Used | $49K | 14.40% | 100.00% | $7K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8463200060 | Thread Rolling Mach, Metal Forming, Un $3025, New | $222K |
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.
Imports · August 2026
origin
Germany and Taiwan together supply 64% of it. Israel pays 12.5% duty; Germany <0.1%.
customs district
destination
entry
rate provision · imports
8.6% enters free of duty; duty collected equals 5.90% of imports for consumption.