Product classification
HS code for Insulating fittings: 8547.90
Insulating fittings, (other than of ceramics or plastics), for electrical machines, appliances and equipment, excluding insulators of heading no. 8546.
Classification of insulating fittings under HS 8547.90
Insulating fittings for electrical machines, appliances, or equipment are classified under HS code 8547.90, provided they are not made of ceramics or plastics. This heading is part of Chapter 85 and covers components that are designed to provide electrical insulation within the assembly of electrical devices. The classification under 8547 is reserved for fittings that are incorporated into the structure of a machine to isolate conductive parts. Subheading 8547.90 serves as the \"other\" category, capturing fittings made from materials such as base metal that has been internally lined with insulating material, or composite materials that do not fall under the ceramic (8547.10) or plastic (8547.20) subheadings. A key aspect of this classification is the distinction between \"insulating fittings\" and \"insulators.\" According to the Explanatory Notes to the HS, insulators of heading 8546 are generally used to support or fix conductors in place, particularly in outdoor power distribution, whereas insulating fittings of 8547 are typically used within the internal circuitry or housing of electrical equipment. The product must be specifically designed for its insulating function; general-purpose parts that happen to be made of non-conductive material but serve a primarily structural role may be classified elsewhere.
- Covers
- Metal conduit joints lined with insulating material
- Insulating sleeves for electrical motor windings
- Composite insulating spacers for transformers
- Threaded insulating bushings of base metal
- Insulating connection boxes (non-plastic/non-ceramic)
- Also under 8547.90
- ABB high-voltage bushings
- Siemens transformer insulation
- GE industrial motor insulators
- DuPont Nomex insulation
- 3M electrical tapes (specialized types)
Codes often confused with 8547.90
Common mistake. Confusion often arises between 8547.90 and 8546.90 (Electrical insulators). The rule of thumb is that 8546 covers the entire insulating unit used for fixing conductors, while 8547 covers fittings used inside machines. Furthermore, if the fitting is made entirely of plastic, it must be classified under 8547.20, and if made of ceramic, under 8547.10. Misclassifying these as general hardware under Chapter 73 (steel) or 74 (copper) is also common but incorrect if the primary function is electrical insulation.
Top exporters and importers of HS 854790 (the code used for insulating fittings), 2025
In 2025, the largest exporter of HS 854790 (the code used for insulating fittings) in UN Comtrade data was China, with 33% of world exports; the largest importer in UN Comtrade data was the United States, with 12% 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 854790, not only insulating fittings.
Top exporters 2025 · share of world exports
- 1 China $515M 33% of world exports
- 2 United States $167M 11% of world exports
- 3 Mexico $87M 5.7% of world exports
World total: $1.5B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $178M 12% of world imports
- 2 South Korea $115M 7.8% of world imports
- 3 China $87M 5.8% of world imports
World total: $1.5B 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 insulating fittings
Brazil classifies insulating fittings under NCM 8547.90.00: HS 8547.90 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about insulating fittings
What is the HS code for Insulating fittings?
The HS code for Insulating fittings is 854790 (Insulating fittings; (other than of ceramics or plastics), for electrical machines, appliances and equipment, excluding insulators of heading no. 8546). The HS code for insulating fittings (other than ceramic or plastic) for electrical equipment is 8547.90.
How do I classify Insulating fittings for customs?
Insulating fittings is classified under HS code 854790 — Insulating fittings; (other than of ceramics or plastics), for electrical machines, appliances and equipment, excluding insulators of heading no. 8546. This is a 6-digit subheading level code.
Can plastic fittings be classified here?
No, insulating fittings made of plastics are specifically classified under HS code 8547.20.
Which countries are the top exporters of insulating fittings (HS 854790)?
In 2025, the top exporters of HS 854790 (the code used for insulating fittings) in UN Comtrade data were China ($515M, 33% of world exports), the United States ($167M) and Mexico ($87M). World exports came to about $1.5B, 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 insulating fittings (HS 854790)?
In 2025, the top importers of HS 854790 (the code used for insulating fittings) in UN Comtrade data were the United States ($178M, 12% of world imports), South Korea ($115M) and China ($87M). World imports came to about $1.5B, 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 Insulating fittings the same in all countries?
The base HS code 854790 for Insulating fittings 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 insulating fittings in Brazil?
In Brazil, insulating fittings (HS 854790) is classified under NCM 8547.90.00.