Heading 9031

HTS code 9031Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof

Chapter
90Optical and medical instruments
Tariff lines
21
General duty
General duty rate of 1.7%, with 20 duty-free lines

Tariff lines under heading 9031

Full 10-digit codes with their general (MFN) duty rates. The correct line depends on the product's material, construction, and use.

HTS codeDescriptionGeneral rateUnit
9031.10.0000Machines for balancing mechanical parts (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof)FreeNo.
9031.20.0000Test benches (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof)1.7%No.
9031.41.0020For inspecting photomasks or reticles used in manufacturing semiconductor devices (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof > Other optical instruments and appliances > For inspecting semiconductor wafers or devices (including integrated circuits) or for inspecting photomasks or reticles used in manufacturing semiconductor devices (including integrated circuits))FreeNo.
9031.41.0040For wafers (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof > Other optical instruments and appliances > For inspecting semiconductor wafers or devices (including integrated circuits) or for inspecting photomasks or reticles used in manufacturing semiconductor devices (including integrated circuits) > For inspecting semiconductor wafers or devices)FreeNo.
9031.41.0060Other (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof > Other optical instruments and appliances > For inspecting semiconductor wafers or devices (including integrated circuits) or for inspecting photomasks or reticles used in manufacturing semiconductor devices (including integrated circuits) > For inspecting semiconductor wafers or devices)FreeNo.
9031.49.1000Profile projectors (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof > Other optical instruments and appliances > Other)FreeNo.
9031.49.4000Coordinate-measuring machines (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof > Other optical instruments and appliances > Other)FreeNo.
9031.49.7000For inspecting masks (other than photomasks) used in manufacturing semiconductor devices; for measuring surface particulate contamination on semiconductor devices (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof > Other optical instruments and appliances > Other)FreeNo.
9031.49.9000Other (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof > Other optical instruments and appliances > Other)FreeNo.
9031.80.4000Electron beam microscopes fitted with equipment specifically designed for the handling and transport of semiconductor wafers or reticles (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof > Other instruments, appliances and machines)FreeNo.
9031.80.8060For testing electrical characteristics (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof > Other instruments, appliances and machines > Other > Equipment for testing the characteristics of internal combustion engines)Freekg
9031.80.8070Other (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof > Other instruments, appliances and machines > Other > Equipment for testing the characteristics of internal combustion engines)Freekg
9031.80.8085Other (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof > Other instruments, appliances and machines > Other)Freekg
9031.90.2100Of profile projectors (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof > Parts and accessories)Freekg
9031.90.4500Bases and frames for the coordinate-measuring machines of subheading 9031.49.40 (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof > Parts and accessories > Of other optical instruments and appliances, other than test benches)Freekg
9031.90.5400Of optical instruments and appliances of subheading 9031.41 or 9031.49.70 (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof > Parts and accessories > Of other optical instruments and appliances, other than test benches)Freekg
9031.90.5900Other (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof > Parts and accessories > Of other optical instruments and appliances, other than test benches)Freekg
9031.90.7000Of articles of subheading 9031.80.40 (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof > Parts and accessories > Other)Freekg
9031.90.9130Of machines for balancing mechanical parts (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof > Parts and accessories > Other > Other)Freekg
9031.90.9160Of test benches (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof > Parts and accessories > Other > Other)Freekg
9031.90.9195Other (Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof > Parts and accessories > Other > Other)Freekg

Documents required to import under 9031

Customs paperwork typically required to import these goods into the United States. Conditional items depend on shipment value, transport mode, or origin.

  • Commercial InvoiceRequired
  • Packing ListRequired
  • Bill of Lading / Airway BillRequired
  • CBP Entry Summary (7501)Required

    Prepared and filed by your customs broker

  • CBP Entry / Release (3461)Required

    Prepared and filed by your customs broker

  • Customs Bond (CBP 301)Conditional

    Required for formal entries — generally shipments valued over $2,500

    Single-entry or continuous bond, obtained through your broker or a surety

  • Importer Security Filing (ISF "10+2")Conditional

    Required for ocean freight only

    Filed electronically at least 24 hours before loading at the foreign port

  • Importer ID Input Record (CBP 5106)Conditional

    Required to establish or update your importer-of-record number with CBP

    One-time setup for a new importer; not filed per shipment

  • Entry Manifest (CBP 7533)Conditional

    Alternative to the 3461 for informal, low-value, or contiguous-country entries

Common questions

What is HTS code 9031?
HTS heading 9031 covers measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof. It sits in Chapter 90 (optical and medical instruments) of the US Harmonized Tariff Schedule and contains 21 tariff lines.
What is the duty rate for HTS 9031?
General duty rate of 1.7%, with 20 duty-free lines. The general rate applies to most-favoured-nation trading partners; goods from countries with a free trade agreement may qualify for a reduced or duty-free special rate.
How many digits does a full HTS code have?
US import entries require the full 10-digit HTS code. Heading 9031 is the first four digits — the remaining six narrow it down to the specific product, which is what determines the duty rate you actually pay.

Related headings in Chapter 90