HS Code for Diamond Grinding Wheels
The HS Code for diamond grinding wheels is 680421. The MFN duty rate for importing to the US is Free.
| HS Code (6-digit) | 680421 |
|---|---|
| US HTS (10-digit) | 6804210000 |
| EU CN Code (8-digit) | 68042100 |
| US Duty Rate (MFN) | Free |
| EU Duty Rate (MFN) | 1.7% |
| Chapter | 68 |
| Heading | 6804 |
| Last Updated | 2026-05 |
Description
Millstones, grindstones, grinding wheels and the like, of agglomerated synthetic or natural diamond
HS Code 680421 provides for agglomerated diamond grinding wheels and similar articles, which enter the United States duty-free.
Frequently Asked Questions
Are there any specific import restrictions, licensing requirements, or anti-dumping measures for diamond grinding wheels (HTS 680421) being imported into the United States?
Yes, imports of diamond grinding wheels under HTS 680421.00.00 from China are currently subject to Section 301 tariffs at a rate of Free. Additionally, while no specific import license is required for this product, shipments may be examined by U.S. Customs and Border Protection (CBP) for intellectual property rights compliance, particularly concerning the synthetic diamond abrasives.
How does the diamond material in grinding wheels under HTS 680421 affect the classification and duty rate?
Classification under 680421 specifically requires that the grinding wheels are made of agglomerated synthetic or natural diamond. This distinguishes them from wheels made of other abrasives (like aluminum oxide or silicon carbide) which are classified elsewhere, often with different duty rates. The agglomerated diamond construction, where diamond particles are bonded together, is the key material characteristic that determines placement in this heading.
Similar and Confused HS Codes
Diamond grinding wheels must be distinguished from similar bonded abrasives. They are correctly classified under 6804.21 as 'other' than hand sharpening stones. However, wheels made with synthetic corundum (aluminum oxide) or silicon carbide are classifiable in 6804.22 or 6804.23. Additionally, mounted points or small grinding heads for rotary tools, even if containing diamond, are often found under 6804.30 as 'hand sharpening or polishing stones'. Always verify the bonding material (e.g., resin, metal, vitrified) and the abrasive grain type to ensure correct classification.
Related HS Codes
WOSEN TOOLS sourcing check
Diamond grinding tooling buyers should match bond, grit, and attachment before sourcing.
Get bond and fit checked by WOSENOpens WOSEN quote request with HTSKit source identifiers attached.