Product classification
HS code for Thread rolling machine: 8463.20
Machine-tools, for working metal, sintered metal carbides or cermets, without removing material, thread rolling machines.
Classification of thread rolling machine under HS 8463.20
HS code 8463.20 applies to thread rolling machines, which are machine-tools designed for working metal, sintered metal carbides, or cermets without removing material. This distinction is critical in Chapter 84. Heading 8463 covers "other" machine-tools for working metal where the process involves deformation rather than cutting. Thread rolling is a cold-forming process that forms threads into the surface of a blank by pressing it against rotating or reciprocating dies. Because this process displaces the metal rather than cutting it away, it is excluded from heading 8459 (which covers metal-removing machines) and placed under 8463. The classification is governed by the mechanical action of the machine. If the machine performs multiple functions, its primary function determines the code under GRI 3(b), but dedicated thread rollers are specifically named in subheading 8463.20. These machines are essential in the production of fasteners like bolts and screws, where the rolling process provides superior grain structure and strength compared to cut threads. The machines may be manual, semi-automatic, or fully automated with hopper feeds, but the core classification remains 8463.20 based on the non-removal of material.
- Covers
- Flat die thread rolling machines
- Planetary thread rolling machines
- Two-die cylindrical thread rollers
- Three-die cylindrical thread rollers
- Automatic bolt thread rolling machines
- Also under 8463.20
- Videx thread rolling machines
- Waterbury Farrel thread rollers
- National Machinery thread rollers
- Tesker thread rolling machines
Codes often confused with 8463.20
Common mistake. The most common error is classifying these under 8459.70, which is for threading machines that remove metal. Another misclassification is 8462.90, which covers other forging or stamping machines, but 8463.20 is more specific for thread rolling.
Top exporters and importers of HS 846320 (the code used for thread rolling machine), 2025
In 2025, the largest exporter of HS 846320 (the code used for thread rolling machine) in UN Comtrade data was China, with 37% of world exports; the largest importer in UN Comtrade data was the United States, with 14% of world imports. Taiwan did not report 2025 data, and its estimate from partner records misses its trade with other countries that did not report: in 2024 that was 14% of its exports here ($2.9M, CEPII BACI), so it may rank higher.
Figures cover everything classified under HS 846320, not only thread rolling machine.
Top exporters 2025 · share of world exports
- 1 China $34M 37% of world exports
- 2 Italy $17M 19% of world exports
- 3 Taiwan* ~$16M 17% of world exports · partner records ↗
Taiwan did not report 2025 data, and its estimate from partner records misses its trade with other countries that did not report: in 2024 that was 14% of its exports here ($2.9M, CEPII BACI), so it may rank higher.
World total: $93M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $15M 14% of world imports
- 2 India $12M 12% of world imports
- 3 China $12M 11% of world imports
World total: $105M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. UN Comtrade records Taiwan as "Other Asia, not elsewhere specified". Saudi Arabia's exports under that code are left out: they are far too large to be trade with Taiwan, so mostly undisclosed partners. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM codes for thread rolling machine
Brazil splits HS 8463.20 into 3 NCM codes. Pick the one that matches your product:
- 8463.20.10CNC thread rolling machines
- 8463.20.91Non-CNC flat-die thread rollers, 160/min or more
- 8463.20.99Other non-CNC thread rolling machines
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about thread rolling machine
What is the HS code for Thread rolling machine?
The HS code for Thread rolling machine is 846320 (Machine-tools; for working metal, sintered metal carbides or cermets, without removing material, thread rolling machines). The specific HS code for thread rolling machines is 8463.20.
How do I classify Thread rolling machine for customs?
Thread rolling machine is classified under HS code 846320 — Machine-tools; for working metal, sintered metal carbides or cermets, without removing material, thread rolling machines. This is a 6-digit subheading level code.
Does a thread rolling machine remove metal?
No, thread rolling machines work by plastic deformation (displacing metal) rather than cutting, which is why they are in 8463 instead of 8459.
Which countries are the top exporters of thread rolling machine (HS 846320)?
In 2025, the top exporters of HS 846320 (the code used for thread rolling machine) in UN Comtrade data were China ($34M, 37% of world exports), Italy ($17M) and Taiwan (about $16M). World exports came to about $93M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Taiwan did not report 2025 data, and its estimate from partner records misses its trade with other countries that did not report: in 2024 that was 14% of its exports here ($2.9M, CEPII BACI), so it may rank higher.
Which countries are the top importers of thread rolling machine (HS 846320)?
In 2025, the top importers of HS 846320 (the code used for thread rolling machine) in UN Comtrade data were the United States ($15M, 14% of world imports), India ($12M) and China ($12M). World imports came to about $105M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Thread rolling machine the same in all countries?
The base HS code 846320 for Thread rolling machine is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for thread rolling machine in Brazil?
Brazil splits HS 846320 into 3 NCM codes, so the right one for thread rolling machine depends on the product's details: 8463.20.10 (CNC thread rolling machines), 8463.20.91 (Non-CNC flat-die thread rollers, 160/min or more), 8463.20.99 (Other non-CNC thread rolling machines).