Product classification
HS code for Screw making machine: 8463.20
Machine-tools, for working metal, sintered metal carbides or cermets, without removing material, thread rolling machines.
Classification of screw making machine under HS 8463.20
The classification of a screw making machine under HS code 8463.20 is based on the specific metalworking process it employs. Heading 8463 encompasses machine-tools for working metal, sintered metal carbides, or cermets, without removing material. Screw production typically involves thread rolling, a cold-forming process where the metal is displaced by hardened steel dies to create threads. This is distinct from thread cutting or grinding, which removes material. According to the Harmonized System Explanatory Notes, heading 8463 includes machines that change the shape of metal through pressure or deformation. Subheading 8463.20 specifically identifies "thread rolling machines." If a machine is designed to produce screws by rolling threads onto a blank, it must be classified here. This applies to both manual and fully automated CNC thread rollers. The classification is determined by the primary function of the machine tool, which is the non-subtractive formation of threads rather than the removal of metal shavings.
- Covers
- Thread rolling machines
- Cold heading machines for screw blanks
- Automatic screw-making lathes (non-cutting)
- Flat die thread rollers
- Circular die thread rollers
- Planetary 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. These machines are often misclassified under HS code 8459.70, which covers threading or tapping machines that remove material. The key distinction is whether the machine cuts the thread (8459) or rolls it (8463). Additionally, some importers mistakenly use 8462.90 for general forging or stamping machines, but 8463.20 is more specific for thread-forming equipment and thus takes precedence under the rules of specific description.
Top exporters and importers of HS 846320 (the code used for screw making machine), 2025
In 2025, the largest exporter of HS 846320 (the code used for screw making 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 screw making 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 screw making 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 screw making machine
What is the HS code for Screw making machine?
The HS code for Screw making machine is 846320 (Machine-tools; for working metal, sintered metal carbides or cermets, without removing material, thread rolling machines). The primary HS code for a screw making machine that utilizes thread rolling technology is 8463.20.
How do I classify Screw making machine for customs?
Screw making 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 this code cover machines that cut threads?
No, machines that produce screws by cutting or removing metal are classified under heading 8459, specifically 8459.70 for threading machines.
Which countries are the top exporters of screw making machine (HS 846320)?
In 2025, the top exporters of HS 846320 (the code used for screw making 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 screw making machine (HS 846320)?
In 2025, the top importers of HS 846320 (the code used for screw making 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 Screw making machine the same in all countries?
The base HS code 846320 for Screw making 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 screw making machine in Brazil?
Brazil splits HS 846320 into 3 NCM codes, so the right one for screw making 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).