HS Code 9031
Specialised Measuring and Checking Machines
HS code 9031 is for measuring or checking instruments, appliances, and machines not elsewhere specified in Chapter 90, including profile projectors.
4-digit Section XVIIIFCL
HS Code 9031 — Specialised Measuring and Checking Machines
This is a 'catch-all' code for machines that check or measure things not mentioned elsewhere. It includes profile projectors for engineering, optical comparators, and automated test benches for engine parts.
What's included
- Optical profile projectors
- Coordinate Measuring Machines (CMM)
- Engine test benches
- Ultrasonic flaw detectors
- Automatic wafer inspection systems
What's excluded
- Surface tension testers → use
9027(These are chemical/physical analysis instruments.) - Hardness testers → use
9024(Hardness is a mechanical property specifically covered by 9024.)
Common examples
- Nikon profile projector
- Bridge-type CMM for engine blocks
- Acoustic emission tester for bridges
- Semiconductor laser inspection tool
Frequently asked questions
Why is this considered a 'basket' heading?
It covers any precision measuring technology that cannot be logically classified under headings like speed, pressure, or chemical analysis.
Trade & shipping notes
- Typical duty range: 0% - 2%
- Documentation: Coordinate Measuring Machines with high precision increments are often subject to international export control regimes.
- Typical shipping mode: FCL
- Top exporters: Germany, Japan, United States
- Top importers: China, South Korea, Mexico
Related HS codes
Key takeaway
Always use a more specific code (like 9026 or 9030) if possible before defaulting to 9031.
Related HS codes
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