HS code · 6-digit subheading
HS Code 8460.31 – Machine-tools; sharpening (tool or cutter grinding) machines, numerically controlled
HS code 8460.31 is the 6-digit subheading for machine-tools, sharpening (tool or cutter grinding) machines, numerically controlled. It is used for CNC tool grinder, CNC cutter grinder, CNC drill grinder, CNC end mill grinder and CNC hob grinder.
What HS 8460.31 covers
This category is for numerically controlled (NC or CNC) sharpening machines, specifically designed for grinding tools or cutters. These highly specialized machines are critical for manufacturing, re-sharpening, and maintaining the precision of cutting tools like drills, end mills, reamers, and hobs. Their CNC capabilities allow for multi-axis control, complex geometries, and automated processes, ensuring optimal tool performance and extended tool life. Industries such as aerospace, automotive, and mold & die making rely heavily on these machines to achieve the highest standards of machining accuracy. Trade involves specialized manufacturers and high-tech production facilities globally.
- Covers
- CNC tool grinder
- CNC cutter grinder
- CNC drill grinder
- CNC end mill grinder
- CNC hob grinder
- CNC reamer grinder
- Examples
- ANCA MX7
- Walter Helitronic Power
- Rollomatic GrindSmart 629XS
- Schneeberger Aries
- Saacke UWIIF
Codes often confused with 8460.31
Common mistake. Can be confused with 846024 (other CNC grinding machines) if the 'sharpening' function isn't explicitly recognized, or with 846039 (non-CNC sharpening machines) if the numerical control aspect is overlooked.
Top exporters and importers of HS code 846031, 2025
In 2025, the largest exporter of HS code 846031 in UN Comtrade data was Thailand, with 19% of world exports; the largest importer in UN Comtrade data was China, with 32% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 Thailand $58M 19% of world exports
- 2 Germany $52M 17% of world exports
- 3 Switzerland $49M 16% of world exports
World total: $304M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 China $117M 32% of world imports
- 2 United States $44M 12% of world imports
- 3 Germany $21M 5.7% of world imports
World total: $363M 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 that did not report are estimated from what other countries recorded trading with them. 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. 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 code for 8460.31
Brazil does not split HS 8460.31: its NCM code is 8460.31.00.
All Brazil NCM codes in heading 84.60 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 8460.31
What is HS code 846031?
HS code 846031 is a 6-digit subheading in the Harmonized System that covers: Machine-tools; sharpening (tool or cutter grinding) machines, numerically controlled. This category is for numerically controlled (NC or CNC) sharpening machines, specifically designed for grinding tools or cutters. These highly specialized machines are critical for manufacturing, re-sharpening, and maintaining the precision of cutting tools like drills, end mills, reamers, and hobs. Their CNC capabilities allow for multi-axis control, complex geometries, and automated processes, ensuring optimal tool performance and extended tool life. Industries such as aerospace, automotive, and mold & die making rely heavily on these machines to achieve the highest standards of machining accuracy. Trade involves specialized manufacturers and high-tech production facilities globally.
What products fall under HS code 846031?
CNC tool grinder, CNC cutter grinder, CNC drill grinder, CNC end mill grinder, CNC hob grinder, CNC reamer grinder
What are common misclassifications for HS code 846031?
Can be confused with 846024 (other CNC grinding machines) if the 'sharpening' function isn't explicitly recognized, or with 846039 (non-CNC sharpening machines) if the numerical control aspect is overlooked.
Which countries are the top exporters of goods under HS code 846031?
In 2025, the top exporters of HS code 846031 in UN Comtrade data were Thailand ($58M, 19% of world exports), Germany ($52M) and Switzerland ($49M). World exports came to about $304M, 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.
Which countries are the top importers of goods under HS code 846031?
In 2025, the top importers of HS code 846031 in UN Comtrade data were China ($117M, 32% of world imports), the United States ($44M) and Germany ($21M). World imports came to about $363M, 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.
How is HS code 846031 structured?
HS code 846031 is a 6-digit subheading under the Harmonized System. The first 2 digits (84) identify the chapter, digits 3-4 (60) identify the heading, and digits 5-6 (31) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 846031?
In Brazil, HS code 846031 is NCM 8460.31.00. The last two digits are 00 because Brazil does not split this HS code further.