HS code · 6-digit subheading

HS Code 8437.90 – Machines; parts of those for cleaning, sorting or grading seed, grain or dried leguminous vegetables or for milling or working cereals or dried leguminous vegetables (not farm-type machinery)

HS code 8437.90 is the 6-digit subheading for machines, parts of those for cleaning, sorting or grading seed, grain or dried leguminous vegetables or for milling or working cereals or dried leguminous vegetables (not farm-type machinery). It is used for mill rollers, sieve frames, conveyor belts for grain, aspirator screens and rice polisher stones.

What HS 8437.90 covers

This HS code covers the essential parts and components for industrial machinery used in cleaning, sorting, grading, milling, and working cereals and dried leguminous vegetables. These parts are critical for the maintenance, repair, and upgrading of sophisticated processing equipment, ensuring continuous operation in large-scale food production facilities. The trade in these specialized components is vital for the global food processing industry, supporting the production of flour, rice, pulses, and other grain-based products. Importers are typically food processing companies and industrial mills that rely on a steady supply of spare parts to minimize downtime and maintain production efficiency. Exporters are often manufacturers of the original machinery or specialized component suppliers. Key considerations include the precision engineering, durability, and material quality of these parts, as they must withstand continuous operation and meet stringent food safety standards.

Covers
  • Mill rollers
  • Sieve frames
  • Conveyor belts for grain
  • Aspirator screens
  • Rice polisher stones
  • Extruder dies
  • Separator membranes
  • Grain elevator buckets
Examples
  • Bühler mill spare parts
  • Satake rice mill components
  • Cimbria cleaning machine parts
  • Ocrim milling plant spares
  • F. H. Schule dehuller parts

Codes often confused with 8437.90

Common mistake. This code specifically covers parts for the industrial machines of 843710 and 843780; it should not be confused with parts for general agricultural machinery (e.g., 843290) or parts for bakery machinery (e.g., 843810 parts if they existed, but 8438 doesn't have a specific parts subheading, so they might fall under 843890).

8437.10Machines; for cleaning, sorting or grading seed, grain or dried leguminous vegetables8437.80Machinery; for use in the milling industry or for the working of cereals or dried leguminous vegetables, other than farm-type machinery8432.90Machinery; parts of machinery for soil preparation or cultivation or for rollers for lawns or sports-grounds8438.10Machinery; industrial, for bakery and for the manufacture of macaroni, spaghetti or similar products84.38Machinery n.e.c. in this chapter, for the industrial preparation or manufacture of food or drink; other than machinery for extraction or preparation of animal or fixed vegetable or microbial fats or oils8438.90Machinery; parts of those machines used in the industrial preparation or manufacture of food or drink

Top exporters and importers of HS code 843790, 2025

In 2025, the largest exporter of HS code 843790 in UN Comtrade data was China, with 23% of world exports; the largest importer in UN Comtrade data was Belarus, with about 8.9% 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 China $190M
  2. 2 Italy $151M
  3. 3 Switzerland $70M

World total: $843M Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 Belarus* ~$72M
  2. 2 United States $48M
  3. 3 Iraq* ~$44M

World total: $806M 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. 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 8437.90

Brazil does not split HS 8437.90: its NCM code is 8437.90.00.

  1. 8437.90.00 Parts of grain cleaning and milling machineryPartes

All Brazil NCM codes in heading 84.37 →

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

Questions about HS 8437.90

What is HS code 843790?

HS code 843790 is a 6-digit subheading in the Harmonized System that covers: Machines; parts of those for cleaning, sorting or grading seed, grain or dried leguminous vegetables or for milling or working cereals or dried leguminous vegetables (not farm-type machinery). This HS code covers the essential parts and components for industrial machinery used in cleaning, sorting, grading, milling, and working cereals and dried leguminous vegetables. These parts are critical for the maintenance, repair, and upgrading of sophisticated processing equipment, ensuring continuous operation in large-scale food production facilities. The trade in these specialized components is vital for the global food processing industry, supporting the production of flour, rice, pulses, and other grain-based products. Importers are typically food processing companies and industrial mills that rely on a steady supply of spare parts to minimize downtime and maintain production efficiency. Exporters are often manufacturers of the original machinery or specialized component suppliers. Key considerations include the precision engineering, durability, and material quality of these parts, as they must withstand continuous operation and meet stringent food safety standards.

What products fall under HS code 843790?

Mill rollers, Sieve frames, Conveyor belts for grain, Aspirator screens, Rice polisher stones, Extruder dies, Separator membranes, Grain elevator buckets

What are common misclassifications for HS code 843790?

This code specifically covers parts for the industrial machines of 843710 and 843780; it should not be confused with parts for general agricultural machinery (e.g., 843290) or parts for bakery machinery (e.g., 843810 parts if they existed, but 8438 doesn't have a specific parts subheading, so they might fall under 843890).

Which countries are the top exporters of goods under HS code 843790?

In 2025, the top exporters of HS code 843790 in UN Comtrade data were China ($190M, 23% of world exports), Italy ($151M) and Switzerland ($70M). World exports came to about $843M, 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 843790?

In 2025, the top importers of HS code 843790 in UN Comtrade data were Belarus (about $72M, 8.9% of world imports), the United States ($48M) and Iraq (about $44M). World imports came to about $806M, 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 843790 structured?

HS code 843790 is a 6-digit subheading under the Harmonized System. The first 2 digits (84) identify the chapter, digits 3-4 (37) identify the heading, and digits 5-6 (90) specify the subheading. This code is standardized globally by the World Customs Organization.

What is the Brazil NCM code for HS code 843790?

In Brazil, HS code 843790 is NCM 8437.90.00. The last two digits are 00 because Brazil does not split this HS code further.