Nitrided Single Screw for Thermoset Plastic Profiles
A nitrided steel single screw optimized for extruding thermosetting plastics like phenolic resins into profiles for electrical insulation. Classified under HTS 8477.20.00.05 due to its use in thermoset material processing equipment. The nitriding enhances wear resistance for high-temperature, abrasive thermoset extrusion.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for injection molding machines
Screws designed for plastic injection rather than continuous extrusion fall under injection molding machinery headings.
If adapted for industrial furnace heating elements
Thermoset processing screws repurposed for heat treatment machinery may classify under Chapter 84 furnace parts.
If sold as part of a complete rubber compounding line
Machinery parts for other rubber working processes like calendering use different Chapter 84 subheadings.
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
• Provide heat treatment certificates proving nitriding for thermoset durability to support 8477 classification
• Declare processing temperature ratings (>200°C for thermosets) in invoices to distinguish from thermoplastic screws
• Avoid common pitfalls by bundling with full extruder assembly docs if imported as replacement part
Related Products under HTS 8477.20.00.05
Single Screw Extruder for Rubber Tires
A precision-engineered single screw component designed for extruders used in processing natural or synthetic rubber into tire treads and sidewalls. It falls under HTS 8477.20.00.05 as it is specifically for rubber thermosetting materials, facilitating uniform melting and shaping in extrusion lines. This part ensures high-volume production with consistent material flow.
High-Torque Single Screw for EPDM Rubber Seals
Engineered single screw for high-torque extruders processing EPDM rubber into weatherstripping and automotive seals. Falls under HTS 8477.20.00.05 for its role in thermosetting rubber extrusion machinery. Features deep channel geometry for shear-sensitive rubber compounds.
Barrier Single Screw for Melamine Extrusion
A barrier-type single screw for extruding melamine-formaldehyde thermoset resins into laminates and moldings. Classified in HTS 8477.20.00.05 for thermosetting plastics processing in dedicated extruders. The barrier design prevents resin degradation during high-heat extrusion.
Corrosion-Resistant Single Screw for Silicone Rubber Extrusion
A single screw with corrosion-resistant alloy coating for extruding liquid silicone rubber (LSR) into medical tubing and seals. It qualifies for HTS 8477.20.00.05 as it's engineered for thermosetting rubber processing in high-precision extruders. The design handles LSR's unique curing requirements during extrusion.