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Wafer Lapping Machine Special Attachment

A precision attachment for wafer lappers ensuring flatness tolerances during semiconductor wafer preparation for fabrication. It is a special attachment for lapping machines of heading 84.64, which covers equipment for working stone, ceramics, and similar materials, and is classified under tariff item 8466.30.00.

Import Duty Rates by Country of Origin

Origin CountryMFN TariffSurtaxesTotal Effective Rate
🇨🇳ChinaFree—Free
🇲🇽MexicoFree—Free
🇺🇸United StatesFree—Free
🇩🇪GermanyFree—Free
🇯🇵JapanFree—Free

More Specific Codes

This product may fall under a more specific subheading:

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

8486.20.00Same rate: Free

If imported with the wafer lapper as a complete unit

Machines for lapping semiconductor wafers are classified in heading 84.86, and the attachment may be considered a part of that machine.

8466.93.10Same rate: Free

If the item is a general-purpose part for lapping machines

Other parts for machines of headings 84.56 to 84.65 may fall under this heading if not a special attachment.

Not sure which classification is right?

The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.

Import Tips & Compliance

• Classify the attachment under 8466.30.00 only if it is a special attachment for the lapping machine; if it is a general-purpose part, it may fall under another heading

• Keep detailed records of the item's design and function to support classification

• Verify if the item qualifies for duty-free entry under the Information Technology Agreement

Related Products under Tariff item 8466.30.00

Angle Head Attachment for Machining Centers

An angle head special attachment for machining centers that redirects spindle axis to 90 degrees, enabling access to undercuts and deep cavities without repositioning. It is a special attachment for machines of headings 84.56 to 84.65.

Automatic Pallet Changer Interface

A special attachment interface kit for horizontal machining centers enabling unmanned 8-pallet changes. It is a special attachment for machines of headings 84.59 to 84.61, which include machining centers for working metal, and is classified under tariff item 8466.30.00.

Band Saw Resaw Guide Attachment

A precision-machined aluminum guide that mounts to band saws for straight, tall resawing cuts in lumber, stabilizing the workpiece vertically. It is a special attachment for woodworking machines of heading 84.65.

Boule Diameter Grinder Indexing Head

An indexing head attachment for grinders that achieve precise boule diameters for standard wafer sizes (e.g., 300mm). It is classified under tariff item 8466.30.00 as a special attachment for wafer preparation equipment.

CNC Dividing Head for Milling Machines

A precision dividing head designed for CNC milling machines, enabling accurate angular indexing and rotation of workpieces for machining complex geometries like gears and splines. It is a special attachment for machines of headings 84.56 to 84.65, specifically for dividing heads.

CNC Machine Rotary Table Attachment

A precision rotary table designed as a special attachment for CNC milling machines in headings 84.59 to 84.61, enabling 4th axis machining by rotating the workpiece during operation. It is classified under tariff item 8466.30.00 as a dividing head or special attachment.