HS Code for Grindstones

Grindstones used for milling, grinding, or pulping are classified under HS code 6804.10. This heading is part of Chapter 68, which encompasses articles of stone, plaster, cement, asbestos, mica, or similar materials. Heading 6804 specifically covers millstones, grindstones, grinding wheels, and the like, without frameworks, for working stone, ceramics, or other materials. Subheading 6804.10 is reserved for those stones specifically intended for milling, grinding, or pulping processes. These items are typically made of natural stone, agglomerated natural or artificial abrasives, or ceramics. The absence of a framework or mechanical drive system at the time of classification is what separates this code from tool-based headings in Chapter 82 or machinery in Chapter 84. The classification is based on the material composition and the intended industrial application. These stones are often used in the food industry for grinding grain or in the paper industry for pulping wood. The Harmonized System requires that these articles be presented without any mounting; once they are mounted on a spindle or in a frame, their classification may change to Chapter 82 or 84 depending on the complexity of the assembly.

Products Included

• Natural stone millstones for flour milling
• Agglomerated abrasive grindstones for pulping
• Ceramic grinding wheels for industrial milling
• Replacement grindstones for pulping machines
• Horizontal or vertical millstones without frames

Common Misclassification

Grindstones are often misclassified under HS code 8205.90 if the importer assumes they are hand tools. However, 8205.90 requires a framework. Another common mistake is HS code 6805, which covers abrasive powder or grain on a base of textile material or paper (sandpaper). Grindstones are solid articles, not coated abrasives. Additionally, if the stone is for sharpening knives by hand (whetstones), it may fall under 6804.30 rather than 6804.10.

FAQ

What is the HS code for grindstones?

Grindstones for milling, grinding, or pulping are classified under HS code 6804.10.

Can these grindstones contain diamond abrasives?

Yes, grindstones made of agglomerated synthetic diamonds are still classified under heading 6804, provided they are not mounted on a framework.