# United States tariff lines under HS 9031.10

> The United States tariff splits HS 9031.10 (machines for balancing mechanical parts) into 1 national line: 9031.10.00.00 (machines for balancing mechanical parts). Every United States line under 9031.10 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/903110
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 90](https://border.bot/countries/united-states/hs-codes/90) / [9031.10](https://border.bot/countries/united-states/hs-codes/903110)

## Key facts

- HS subheading: [9031.10](https://border.bot/hs-codes/903110)
- Duty (MFN): Free
- National lines: 1
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 90: Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof

## United States lines under 9031.10

The United States tariff splits HS 9031.10 (machines for balancing mechanical parts) into 1 national line: 9031.10.00.00 (machines for balancing mechanical parts).

Every United States line under 9031.10 is free of general (MFN) duty.

- [9031.10.00.00](https://border.bot/countries/united-states/hs-codes/9031100000) Machines for balancing mechanical parts. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 9031.10 yet.

- [The Harmonized System text for 9031.10](https://border.bot/hs-codes/903110)

- Previous subheading: [9030.90](https://border.bot/countries/united-states/hs-codes/903090) Parts and accessories
- Next subheading: [9031.20](https://border.bot/countries/united-states/hs-codes/903120) Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 9031.10?

The United States tariff splits HS 9031.10 (machines for balancing mechanical parts) into 1 national line: 9031.10.00.00 (machines for balancing mechanical parts).

### What is the duty on HS 9031.10 in the United States?

Every United States line under 9031.10 is free of general (MFN) duty.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/903110.json