HS code · 6-digit subheading

HS Code 8466.91 – Parts & accessories suited for use solely/principally; for the machines of heading no. 8464, n.e.c. in heading no. 8466

HS code 8466.91 is the 6-digit subheading for parts & accessories suited for use solely/principally, for the machines of heading no. 8464, n.e.c. in heading no. 8466. It is used for diamond saw blade flanges, grinding wheel adapters, stone cutting machine guides, glass polishing machine spindles and concrete saw coolant nozzles.

What HS 8466.91 covers

This HS code is dedicated to parts and accessories specifically designed for machine tools that process stone, ceramics, concrete, asbestos-cement, or similar mineral materials, or for cold working glass, as classified under heading 8464. These components are engineered to withstand the abrasive and demanding conditions inherent in working with such hard and brittle materials. This includes specialized tool holders for diamond tools, unique coolant delivery systems, and robust dust extraction interfaces. The trade in these goods is crucial for the construction, mining, and specialized manufacturing sectors globally, particularly in countries with significant infrastructure development or natural resource processing industries. Importers and exporters focus on durability, wear resistance, and precision, ensuring the longevity and efficiency of machinery used in cutting, grinding, and polishing these challenging materials.

Covers
  • Diamond saw blade flanges
  • Grinding wheel adapters
  • Stone cutting machine guides
  • Glass polishing machine spindles
  • Concrete saw coolant nozzles
  • Ceramic tile cutting machine tables
  • Dust collection hoods for stone working
  • Core drill bits holders
Examples
  • Husqvarna K-series parts
  • Tyrolit grinding machine accessories
  • Makita stone cutter parts
  • Bosch diamond tool accessories
  • Montresor glass processing machine parts

Codes often confused with 8466.91

Common mistake. Often confused with 846693 (general parts for 8456-8465) or 846692 (parts for woodworking machines) if the specific application to 8464 machines isn't clearly identified.

8466.93Parts & accessories suited for use solely/principally with machines of headings 8456-8465; n.e.c. in heading no. 846684.56Machine-tools; for working any material by removal of material, by laser or other light or photon beam, ultrasonic, electro-discharge, electro-chemical, electron beam, ionic-beam, or plasma arc processes; water-jet cutting machines84.65Machine-tools; (including machines for nailing, stapling, glueing or otherwise assembling) for working wood, cork, bone, hard plastics or rubber or similar hard materials8466.92Parts & accessories suited for use solely/principally for the machines of heading no. 8465, n.e.c. in heading no. 846684.64Machine-tools; for working stone, ceramics, concrete, asbestos-cement or like mineral materials or for cold working glass

Top exporters and importers of HS code 846691, 2025

In 2025, the largest exporter of HS code 846691 in UN Comtrade data was the United States, with 31% of world exports; the largest importer in UN Comtrade data was Taiwan, with about 12% 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. 1 United States $263M
  2. 2 Italy $128M
  3. 3 China $96M

World total: $861M Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 Taiwan* ~$88M
  2. 2 United States $78M
  3. 3 Germany $52M

World total: $729M 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 code for 8466.91

Brazil does not split HS 8466.91: its NCM code is 8466.91.00.

  1. 8466.91.00 Stone, ceramic, glass machine parts, accessoriesPara máquinas da posição 84.64

All Brazil NCM codes in heading 84.66 →

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.

Questions about HS 8466.91

What is HS code 846691?

HS code 846691 is a 6-digit subheading in the Harmonized System that covers: Parts & accessories suited for use solely/principally; for the machines of heading no. 8464, n.e.c. in heading no. 8466. This HS code is dedicated to parts and accessories specifically designed for machine tools that process stone, ceramics, concrete, asbestos-cement, or similar mineral materials, or for cold working glass, as classified under heading 8464. These components are engineered to withstand the abrasive and demanding conditions inherent in working with such hard and brittle materials. This includes specialized tool holders for diamond tools, unique coolant delivery systems, and robust dust extraction interfaces. The trade in these goods is crucial for the construction, mining, and specialized manufacturing sectors globally, particularly in countries with significant infrastructure development or natural resource processing industries. Importers and exporters focus on durability, wear resistance, and precision, ensuring the longevity and efficiency of machinery used in cutting, grinding, and polishing these challenging materials.

What products fall under HS code 846691?

Diamond saw blade flanges, grinding wheel adapters, stone cutting machine guides, glass polishing machine spindles, concrete saw coolant nozzles, ceramic tile cutting machine tables, dust collection hoods for stone working, core drill bits holders

What are common misclassifications for HS code 846691?

Often confused with 846693 (general parts for 8456-8465) or 846692 (parts for woodworking machines) if the specific application to 8464 machines isn't clearly identified.

Which countries are the top exporters of goods under HS code 846691?

In 2025, the top exporters of HS code 846691 in UN Comtrade data were the United States ($263M, 31% of world exports), Italy ($128M) and China ($96M). World exports came to about $861M, 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 846691?

In 2025, the top importers of HS code 846691 in UN Comtrade data were Taiwan (about $88M, 12% of world imports), the United States ($78M) and Germany ($52M). World imports came to about $729M, 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 846691 structured?

HS code 846691 is a 6-digit subheading under the Harmonized System. The first 2 digits (84) identify the chapter, digits 3-4 (66) identify the heading, and digits 5-6 (91) specify the subheading. This code is standardized globally by the World Customs Organization.

What is the Brazil NCM code for HS code 846691?

In Brazil, HS code 846691 is NCM 8466.91.00. The last two digits are 00 because Brazil does not split this HS code further.