Powder Metallurgy HSS Thread Mill
A solid carbide thread mill made from powder metallurgy high-speed steel (PM-HSS) containing tungsten carbides over 0.2%, designed for helical interpolation threading in 3-5 axis CNC mills, particularly for blind holes. Its advanced metallurgy and interchangeable tool design place it under tariff item 8207.40.00 for tools for tapping or threading.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | 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.
If the tool is primarily used for reaming rather than threading
Tools for reaming are classified separately under this heading, even if they also perform threading.
If the tool is designed for milling operations, not threading
Milling tools fall under a different subheading of interchangeable tools.
If the tool is not specifically identifiable as a threading tool
Other interchangeable tools are classified in the residual subheading.
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
• Ensure the thread mill is declared as an interchangeable tool for machine-tools, with its PM-HSS composition clearly documented
• Verify whether the tungsten carbide content affects classification under Chapter 82 or Section XV notes
• Keep supplier certificates of analysis handy in case CBSA requests proof of metallurgy
Related Products under Tariff item 8207.40.00
1/2-13 NPT Pipe Thread Tap
A taper pipe tap for 1/2-13 NPT threads, made from 5% chromium high-speed steel for durability in steel piping. Designed for power tapping heads in plumbing and oilfield applications, it is an interchangeable tool for tapping threads. Its base metal construction and tapping function place it under tariff item 8207.40.00.
Adjustable Pipe Threading Die 1/2 Inch NPT
An adjustable die head for cutting National Pipe Taper (NPT) threads on steel pipes, used in plumbing and industrial pipefitting. It functions as an interchangeable tool for portable or stationary threading machines, making it a tool for threading. Its base metal construction places it under tariff item 8207.40.00.
Carbide Machine Threading Die 1/4-20 UNC
A solid carbide circular die for external threading on bolts and rods, compatible with lathes and threading machines. Ideal for high-precision, high-volume production in automotive and aerospace industries, it is an interchangeable tool for threading. Its carbide construction and function place it under tariff item 8207.40.00.
Carbide Tipped Threading Die M10 x 1.5
An adjustable round die for cutting external M10 x 1.5 metric threads, featuring tungsten carbide inserts for durability. Designed for hand or lathe use in creating precise external threads on rods and bolts, it is an interchangeable tool for threading. Its construction and function align with tariff item 8207.40.00.
Collapsible Threading Die M20 x 2.5
A collapsible, self-opening die for threading metric M20 bolts in production lines, designed for quick changes and efficient chip evacuation in machine tools. Its collapsible mechanism and use in threading operations place it under tariff item 8207.40.00 for tools for tapping or threading.
Exotic Alloy Threading Insert for CNC
Indexable threading inserts made from CBN or ceramic composites, used for high-speed CNC lathes on hard materials like titanium. These interchangeable tips are designed for precision threading and fall under tariff item 8207.40.00 as tools for tapping or threading.