Product classification
HS code for Micrometers: 9017.30
Mathematical equipment, micrometers, callipers and gauges.
Classification of micrometers under HS 9017.30
Micrometers are classified under HS code 9017.30. This classification is governed by Chapter 90, which covers optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus. Heading 9017 specifically includes drawing, marking-out, or mathematical calculating instruments and instruments for measuring length, for use in the hand. Subheading 9017.30 is the specific provision for micrometers, calipers, and gauges. The classification applies regardless of whether the micrometer is a traditional mechanical analog device or a modern digital version with an LCD screen, as the primary function remains the manual measurement of linear dimensions.
- Covers
- External and internal micrometers
- Digital electronic micrometers
- Depth micrometers
- Micrometer heads for integration into machinery
- Also under 9017.30
- Mitutoyo Digital Caliper
- Starrett Micrometer
- Fowler Electronic Depth Gauge
- Tesa Brown & Sharpe Bore Gauge
- Sylvac Digital Indicator
Codes often confused with 9017.30
Common mistake. Micrometers are sometimes incorrectly classified under HS code 9031.80, which is a residual category for "other" measuring or checking instruments. However, because 9017.30 specifically names micrometers, it takes precedence according to GRI 3(a). Another error is classifying them under 8205 as general hand tools; while they are used by hand, their high-precision measuring nature requires classification in Chapter 90.
Top exporters and importers of HS 901730 (the code used for micrometers), 2025
In 2025, the largest exporter of HS 901730 (the code used for micrometers) in UN Comtrade data was China, with 26% 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 901730, not only micrometers.
Top exporters 2025 · share of world exports
- 1 China $184M 26% of world exports
- 2 Japan $149M 21% of world exports
- 3 United States $76M 11% of world exports
World total: $714M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $95M 13% of world imports
- 2 Germany $54M 7.4% of world imports
- 3 Netherlands $43M 5.8% of world imports
World total: $737M 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 micrometers
Brazil splits HS 9017.30 into 3 NCM codes. Pick the one that matches your product:
- 9017.30.10Micrometers
- 9017.30.20Callipers
- 9017.30.90Gauges and similar measuring instruments
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about micrometers
What is the HS code for Micrometers?
The HS code for Micrometers is 901730 (Mathematical equipment; micrometers, callipers and gauges). The HS code for micrometers is 9017.30, which also includes calipers and various types of gauges.
How do I classify Micrometers for customs?
Micrometers is classified under HS code 901730 — Mathematical equipment; micrometers, callipers and gauges. This is a 6-digit subheading level code.
Does the HS code change for digital micrometers?
No, both digital and analog micrometers are classified under 9017.30 as they perform the same fundamental measuring function.
Which countries are the top exporters of micrometers (HS 901730)?
In 2025, the top exporters of HS 901730 (the code used for micrometers) in UN Comtrade data were China ($184M, 26% of world exports), Japan ($149M) and the United States ($76M). World exports came to about $714M, 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 micrometers (HS 901730)?
In 2025, the top importers of HS 901730 (the code used for micrometers) in UN Comtrade data were the United States ($95M, 13% of world imports), Germany ($54M) and the Netherlands ($43M). World imports came to about $737M, 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 Micrometers the same in all countries?
The base HS code 901730 for Micrometers 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 micrometers in Brazil?
Brazil splits HS 901730 into 3 NCM codes, so the right one for micrometers depends on the product's details: 9017.30.10 (Micrometers), 9017.30.20 (Callipers), 9017.30.90 (Gauges and similar measuring instruments).