Product classification
HS code for Machine tool accessories: 8466.93
Parts & accessories suited for use solely/principally with machines of headings 8456-8465, n.e.c. in heading no. 8466.
Classification of machine tool accessories under HS 8466.93
Machine tool accessories are classified under HS code 8466.93. This heading is part of Chapter 84, which deals with nuclear reactors, boilers, machinery, and mechanical appliances. Specifically, 8466 covers parts and accessories suited for use solely or principally with the machines of headings 8456 to 8465. Subheading 8466.93 is designated for accessories used with machines for working metal (headings 8456 to 8461). Classification is determined by the 'sole or principal use' rule found in Section XVI Note 2(b). If an accessory is designed specifically to enhance or enable the function of a metal-working machine tool, such as a milling machine or lathe, it falls here. This excludes general-purpose tools or parts that are classified elsewhere by their own merit. The technical nature of these accessories—ranging from indexing heads to specialized attachments—requires they be distinguished from the machines themselves, which are classified in their respective headings (e.g., 8458 for lathes).
- Covers
- Dividing heads for milling machines
- Indexing tables for machine tools
- Specialized grinding attachments
- Carriage stops for lathes
- Copying attachments for metal-working machines
- Auxiliary spindles
- Also under 8466.93
- Siemens Sinumerik control parts
- Bosch Rexroth hydraulic components
- SKF lubrication systems
- Balluff sensors for machine tools
- Schmersal safety switches
Codes often confused with 8466.93
Common mistake. The most common misclassification occurs with HS code 8466.10 (tool holders) and 8466.20 (work holders). While these are also accessories, they have their own specific subheadings. 8466.93 is a residual category for accessories that do not qualify as tool or work holders. Another error is classifying these items under 8207 (interchangeable tools), which is for the actual cutting bits or drills. Accessories in 8466.93 support the machine's operation but are not the consumable cutting edge itself. Finally, parts of general use like bearings or belts should be classified in their own headings (e.g., 8482 or 4010) rather than 8466.93.
Top exporters and importers of HS 846693 (the code used for machine tool accessories), 2025
In 2025, the largest exporter of HS 846693 (the code used for machine tool accessories) in UN Comtrade data was Germany, with 19% of world exports; the largest importer in UN Comtrade data was the United States, with 13% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 846693, not only machine tool accessories.
Top exporters 2025 · share of world exports
- 1 Germany $1.4B 19% of world exports
- 2 China $886M 12% of world exports
- 3 United States $762M 11% of world exports
World total: $7.2B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $983M 13% of world imports
- 2 China $696M 9.2% of world imports
- 3 Germany $657M 8.7% of world imports
World total: $7.6B 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 codes for machine tool accessories
Brazil splits HS 8466.93 into 7 NCM codes. Pick the one that matches your product:
- 8466.93.11Ultrasonic machine-tool parts and accessories
- 8466.93.19Laser, EDM and similar machine parts, accessories
- 8466.93.20Machining/transfer machine parts and accessories
- 8466.93.30Metalworking lathe parts and accessories
- 8466.93.40Metal drilling/milling machine parts, accessories
- 8466.93.50Grinding/polishing machine parts and accessories
- 8466.93.60Metal planer, gear cutter, saw parts, accessories
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about machine tool accessories
What is the HS code for Machine tool accessories?
The HS code for Machine tool accessories is 846693 (Parts & accessories suited for use solely/principally with machines of headings 8456-8465; n.e.c. in heading no. 8466). The HS code for accessories for metal-working machine tools is 8466.93.
How do I classify Machine tool accessories for customs?
Machine tool accessories is classified under HS code 846693 — Parts & accessories suited for use solely/principally with machines of headings 8456-8465; n.e.c. in heading no. 8466. This is a 6-digit subheading level code.
Are CNC software updates classified here?
No, software is typically classified under Chapter 85 (specifically 8523) or treated as a service, depending on the delivery method and local customs regulations.
Which countries are the top exporters of machine tool accessories (HS 846693)?
In 2025, the top exporters of HS 846693 (the code used for machine tool accessories) in UN Comtrade data were Germany ($1.4B, 19% of world exports), China ($886M) and the United States ($762M). World exports came to about $7.2B, 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 machine tool accessories (HS 846693)?
In 2025, the top importers of HS 846693 (the code used for machine tool accessories) in UN Comtrade data were the United States ($983M, 13% of world imports), China ($696M) and Germany ($657M). World imports came to about $7.6B, 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 Machine tool accessories the same in all countries?
The base HS code 846693 for Machine tool accessories 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 machine tool accessories in Brazil?
Brazil splits HS 846693 into 7 NCM codes, so the right one for machine tool accessories depends on the product's details: 8466.93.11 (Ultrasonic machine-tool parts and accessories), 8466.93.19 (Laser, EDM and similar machine parts, accessories), 8466.93.20 (Machining/transfer machine parts and accessories), 8466.93.30 (Metalworking lathe parts and accessories), 8466.93.40 (Metal drilling/milling machine parts, accessories), 8466.93.50 (Grinding/polishing machine parts and accessories), and more.