Crystal Boule Grinder Capstan Drum
Rotary capstan drum for crystal grinders that shape semiconductor boules to precise wafer diameters and flats indicating conductivity. Under HTS 8431.10.0010 for 8425.19 machinery parts, per statistical note (a)(ii)(A) for crystal grinders.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If grinder sold as complete honing machine
Complete crystal grinders classify as sharpening/honing machines under 8460.
If primarily grinding wheel rather than capstan
Abrasive articles like grinding wheels go to Chapter 68.
If for cam/follower mechanisms in grinding
Specific transmission parts like cams classify in 8483.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Document flat grinding specs for resistivity indication to tie to semiconductor statistical note
• Obtain advance ruling if drum adaptable to non-semiconductor uses
Related Products under HTS 8431.10.00.10
Gallium Arsenide Crystal Puller Gearbox
Gearbox assembly for pullers producing GaAs monocrystalline boules for compound semiconductor wafers. Under HTS 8431.10.0010 as 8425.11 machinery part, statistical note covering gallium arsenide materials.
Wire Tensioner for Wafer Slicing Saws
Precision wire tensioner capstan for maintaining diamond wire tension in semiconductor wafer slicing saws. HTS 8431.10.0010 for 8425.19 saw machinery parts, statistical note (a)(ii)(B).
Boule Flattener Drive Capstan
Drive capstan for grinding flats on crystal boules to indicate conductivity type. Classifies under HTS 8431.10.0010, statistical note (a)(ii)(A).
Wafer Edge Grinder Tension Pulley
Tension pulley for edge grinders bringing wafers to dimensional tolerances. HTS 8431.10.0010, statistical note (a)(ii)(C).
Double-Sided Wafer Lapper Winch
Winch for simultaneous double-sided lapping of semiconductor wafers. HTS 8431.10.0010 for 8425.11.
CMP Polisher Carrier Capstan
Capstan for chemical mechanical polishing carriers in wafer planarization. HTS 8431.10.0010.