Mechanical Ash Discharger Screw
Helical screw conveyor for automatic ash removal from furnace bottoms. Corrosion-resistant alloy construction. Part of mechanical ash dischargers under HTS 8416.90.00.00.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | +37.5% | 37.5% |
| 🇲🇽Mexico | Free | +10.0% | 10% |
| 🇨🇦Canada | Free | +10.0% | 10% |
| 🇩🇪Germany | Free | +10.0% | 10% |
| 🇯🇵Japan | Free | +12.5% | 12.5% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If generic screw conveyor applications
Non-furnace conveyor screws classified with material handling equipment.
If for fuel pump ash handling systems
Parts for fuel handling pumps fall under Chapter 84 pumps.
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
• Pitch/diameter specifications must match discharger OEM drawings
• Alloy certification prevents reclassification as generic conveyor screws
• Avoid declaring as 'conveyor parts' under 8431.39
Related Products under HTS 8416.90.00.00
Pulverized Coal Burner Nozzle
High-temperature resistant nozzle for pulverized solid fuel burners in power plants and cement kilns. Designed to atomize coal particles for optimal combustion. Falls under HTS 8416.90.00.00 as burner parts.
Liquid Fuel Atomizing Nozzle
Precision-machined nozzle creating fine fuel spray pattern for complete combustion in oil-fired furnace burners. Replaceable wear part. Under HTS 8416.90.00.00.
Furnace Burner Refractory Tile
High-alumina refractory tile lining burner throat area exposed to extreme flame temperatures. Custom contoured for airflow. Part of HTS 8416.90.00.00.
Mechanical Stoker Feed Drive Gearbox
Heavy-duty reduction gearbox powering coal/wood feed mechanism in mechanical stokers. High torque for sticky fuels. HTS 8416.90.00.00 stoker part.
Burner Sequence Controller Housing
Die-cast aluminum enclosure protecting burner control electronics from furnace heat and vibration. Gasketed for NEMA 4X. Mechanical part under HTS 8416.90.00.00.
Gas Train Pressure Regulator Body
Heavy-duty regulator body maintaining stable gas pressure to furnace burners. Rated for high BTU industrial gases. Part of HTS 8416.90.00.00 burner systems.