Base
HTS 9031.90Chapter 90

HTS 9031.90 — Parts and accessories: Duty Rate & Import Guide

Optical, Photographic, Medical Instruments · 1 pending regulation · 2 court cases · $79.1M monthly imports · 100% from 1 countries · Updated daily from USITC

Duty Rates

General

Free

Special

Free

Column 2

Free

Trade Agreement Eligibility

CUSMAKORUS

Trade Intelligence

Monthly Imports

$79.1M

2026-01

Trade Concentration

100%

from top 3 of 1 origins

Regulatory Pressure

MODERATE

2 rulings — · 1 reg · 2 CIT, 0 CAFC

Global Rates

🇺🇸 Free

🇬🇧 United Kingdom: N/A · 🇪🇺 European Union: N/A · 🇨🇦 Canada: Free · 🇧🇷 Brazil: 2 NCM codes

Compare All →

Data compiled from USITC HTS, US Census Bureau, CBP CROSS Rulings, Federal Register, CourtListener, Regulations.gov, HMRC / DG TAXUD / CBSA / SISCOMEX · As of 2026-04-29 · Updates monthly

Active DisputesRecent court cases or pending regulations affect this code
Supply Chain Risk

100% of US imports for this code come from just 1 countries. High origin concentration increases exposure to trade disruptions or tariff escalations.

Trade Remedy

Additional Tariffs Apply

Section 301 — China Tariffs+25%

List 1 — ~$34B of Chinese goods (machinery, electronics, industrial components)

Active — 7.5%–25% additional duties on Chinese-origin goods across four tranches (Lists 1–4A), with higher 2024/2025 increases on targeted product categories.

Effective 2018-07-06

These additional tariffs apply on top of the general duty rate. View full trade remedy tracker →

Subheadings (10)

CodeDescriptionRate
9031.90Parts and accessories:—
9031.90.21.00Of profile projectorsFree
9031.90.45.00Bases and frames for the coordinate-measuring machines of subheading 9031.49.40Free
9031.90.54.00Of optical instruments and appliances of subheading 9031.41 or 9031.49.70Free
9031.90.59.00OtherFree
9031.90.70.00Of articles of subheading 9031.80.40Free
9031.90.91OtherFree
9031.90.91.30Of machines for balancing mechanical parts—
9031.90.91.60Of test benches—
9031.90.91.95Other—

CBP Rulings (2)

N292329Classification

The tariff classification of an enclosure for a tank gauging and leak detection system from China

N302645Classification

The tariff classification of Trident DM4500 Wear Debris Monitor parts from China

Federal Register (1)

Rule93-31852
1994-01-03

Rules for Determining the Country of Origin of a Good for Purposes of Annex 311 of the NAFTA and Rules of Origin Applicable to Imported Merchandise; Rule and Proposed Rule

Interim regulations; solicitation of comments.·Effective 1994-01-01

Court of International Trade & Federal Circuit (2)

Agatec Corp. v. United States2007-06-06
Court 03-00165United States Court of International Trade
Northwest Airlines, Inc. v. United States1998-08-05
Slip. Op. 98-114. Court No. 94-08-00485United States Court of International Trade

Regulatory Dockets (1)

USTR regulatory documents related to this tariff code from Regulations.gov.

USTR
2018-11-01T04:00:00Z

Exclusion Denied, Hennessy Industries, ductile iron casting, HTS 9031909130

Source: Regulations.gov

Matching Export Code (Schedule B)

9031900000Schedule B

PARTS & ACCESSORIES OF MACHINES, NESOI IN THIS CHAPTER AND FOR PROFILE PROJECTORS

Census Bureau export classification matching this HTS import code.

← 9031.49.90.009031.90.21.00 →