HS code · 6-digit subheading
HS Code 8540.99 – Valves and tubes; parts of the valves and tubes of heading no. 8540, excluding parts of cathode-ray tubes
HS code 8540.99 is the 6-digit subheading for valves and tubes, parts of the valves and tubes of heading no. 8540, excluding parts of cathode-ray tubes. It is used for filaments for vacuum tubes, grids for power tubes, anodes for magnetrons, ceramic insulators for high-power tubes and glass envelopes (non-CRT).
What HS 8540.99 covers
This is a residual category for parts of all other electronic valves and tubes under heading 8540, specifically excluding parts of cathode-ray tubes (which are covered by 854091). This includes components for vacuum tubes, magnetrons, klystrons, traveling wave tubes, and other specialized electronic tubes used in industrial, scientific, medical, and high-power communication applications. Trade in these parts is highly specialized, supporting the maintenance and manufacturing of niche electronic equipment. Exporters are typically countries with advanced manufacturing capabilities for precision electronic components, such as Japan, Germany, and the USA. Importers include manufacturers of specialized equipment, repair and maintenance facilities, and research institutions. Key trade considerations involve material specifications, precision manufacturing, and compatibility with the specific types of valves or tubes they are designed for, reflecting a critical segment of the specialized electronics supply chain.
- Covers
- Filaments for vacuum tubes
- Grids for power tubes
- Anodes for magnetrons
- Ceramic insulators for high-power tubes
- Glass envelopes (non-CRT)
- RF windows for microwave tubes
- Cathode heaters
- Examples
- Components for Eimac power tubes
- Parts for Hamamatsu photomultiplier tubes
- Replacement parts for industrial magnetrons
- Components for specialized TWTs
- Glass seals for vacuum tubes
Codes often confused with 8540.99
Common mistake. This code is a catch-all for parts of valves and tubes other than CRTs. It's crucial to distinguish it from 854091 (parts of cathode-ray tubes) and from complete valves/tubes themselves (various 8540 subheadings).
Top exporters and importers of HS code 854099, 2025
In 2025, the largest exporter of HS code 854099 in UN Comtrade data was the United States, with 25% of world exports; the largest importer in UN Comtrade data was France, with 30% 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 United States $41M 25% of world exports
- 2 France $30M 18% of world exports
- 3 Singapore $24M 15% of world exports
World total: $163M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 France $84M 30% of world imports
- 2 Netherlands $50M 18% of world imports
- 3 Germany $26M 9.2% of world imports
World total: $280M 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 8540.99
Brazil does not split HS 8540.99: its NCM code is 8540.99.00.
All Brazil NCM codes in heading 85.40 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 8540.99
What is HS code 854099?
HS code 854099 is a 6-digit subheading in the Harmonized System that covers: Valves and tubes; parts of the valves and tubes of heading no. 8540, excluding parts of cathode-ray tubes. This is a residual category for parts of all other electronic valves and tubes under heading 8540, specifically excluding parts of cathode-ray tubes (which are covered by 854091). This includes components for vacuum tubes, magnetrons, klystrons, traveling wave tubes, and other specialized electronic tubes used in industrial, scientific, medical, and high-power communication applications. Trade in these parts is highly specialized, supporting the maintenance and manufacturing of niche electronic equipment. Exporters are typically countries with advanced manufacturing capabilities for precision electronic components, such as Japan, Germany, and the USA. Importers include manufacturers of specialized equipment, repair and maintenance facilities, and research institutions. Key trade considerations involve material specifications, precision manufacturing, and compatibility with the specific types of valves or tubes they are designed for, reflecting a critical segment of the specialized electronics supply chain.
What products fall under HS code 854099?
Filaments for vacuum tubes, Grids for power tubes, Anodes for magnetrons, Ceramic insulators for high-power tubes, Glass envelopes (non-CRT), RF windows for microwave tubes, Cathode heaters
What are common misclassifications for HS code 854099?
This code is a catch-all for parts of valves and tubes other than CRTs. It's crucial to distinguish it from 854091 (parts of cathode-ray tubes) and from complete valves/tubes themselves (various 8540 subheadings).
Which countries are the top exporters of goods under HS code 854099?
In 2025, the top exporters of HS code 854099 in UN Comtrade data were the United States ($41M, 25% of world exports), France ($30M) and Singapore ($24M). World exports came to about $163M, 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 854099?
In 2025, the top importers of HS code 854099 in UN Comtrade data were France ($84M, 30% of world imports), the Netherlands ($50M) and Germany ($26M). World imports came to about $280M, 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 854099 structured?
HS code 854099 is a 6-digit subheading under the Harmonized System. The first 2 digits (85) identify the chapter, digits 3-4 (40) identify the heading, and digits 5-6 (99) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 854099?
In Brazil, HS code 854099 is NCM 8540.99.00. The last two digits are 00 because Brazil does not split this HS code further.