Iron or steel; threaded nuts

HS v2017 Code: 731816

About iron or steel; threaded nuts

HS code 731816 covers the classification of iron or steel threaded nuts, which are essential fasteners used in a wide range of industries. These small but vital components play a crucial role in the assembly and maintenance of machinery, vehicles, and various other products. The global demand for threaded nuts is driven by the continuous need for reliable and secure connections in industrial, construction, and automotive applications, making this industry an integral part of the broader economy.

Production process

Threaded nuts are typically produced through a combination of metal forming and machining processes. The raw material, which is usually iron or steel, is first shaped into the desired nut geometry, often using techniques such as stamping, forging, or casting. The threads are then created through a threading process, which can involve cutting, rolling, or tapping the material to form the internal threads. Quality control and finishing steps, such as heat treatment or surface coating, may also be applied to ensure the desired strength, durability, and corrosion resistance of the final product.

Production inputs

The primary inputs for the production of threaded nuts include iron or steel raw materials, as well as specialized machinery and tools for the metal forming and threading processes. Depending on the specific application, additional inputs such as lubricants, coatings, or heat treatment equipment may also be required to meet the necessary performance and quality standards.

Production outputs

The primary output of HS code 731816 is threaded nuts, which are then consumed by a wide range of industries, including 731815 Iron or steel; threaded screws, 731819 Iron or steel; threaded articles, n.e.c. in heading 7318, and 870829 (Parts and accessories of bodies (including cabs) for motor vehicles). These threaded nuts are essential components in the assembly and maintenance of machinery, vehicles, and various other products, making them a crucial part of the global supply chain.

Revisions to 731816

Classification codes are adjusted frequently. The code may have been revised or replaced between system versions. The table below shows the history (newest to oldest) of the code 731816. The most recent 1 version of this code (731816) is in the HS v2022 system:

This page shows a legacy version of code 731816 ( HS v2017).

Newer versions
Older versions

Family tree for iron or steel; threaded nuts

    graph LR
    A["<a href='/classifications/hs/v2017/73'>73: Iron or steel articles</a>"]
A --> B["<a href='/classifications/hs/v2017/7318'>7318: Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of iron or steel</a>"]
B --> C["<a href='/classifications/hs/v2017/731816'>731816: Iron or steel; threaded nuts</a>"]

    B --> D["<a href='/classifications/hs/v2017/731811'>731811: Iron or steel; threaded coach screws</a>"]
B --> E["<a href='/classifications/hs/v2017/731812'>731812: Iron or steel; threaded wood screws other than coach screws</a>"]
B --> F["<a href='/classifications/hs/v2017/731813'>731813: Iron or steel; threaded screw hooks and screw rings</a>"]
B --> G["<a href='/classifications/hs/v2017/731814'>731814: Iron or steel; threaded self-tapping screws</a>"]
B --> H["<a href='/classifications/hs/v2017/731815'>731815: Iron or steel; threaded screws and bolts n.e.c. in item no. 7318.1, whether or not with their nuts or washers</a>"]
B --> I["<a href='/classifications/hs/v2017/731819'>731819: Iron or steel; threaded screws, bolts and nuts n.e.c. in item no. 7318.1</a>"]
B --> J["<a href='/classifications/hs/v2017/731821'>731821: Iron or steel; non-threaded spring washers and other lock washers</a>"]
B --> K["<a href='/classifications/hs/v2017/731822'>731822: Iron or steel; non-threaded washers, excluding spring and lock</a>"]
B --> L["<a href='/classifications/hs/v2017/731823'>731823: Iron or steel; non-threaded rivets</a>"]
B --> M["<a href='/classifications/hs/v2017/731824'>731824: Iron or steel; non-threaded cotters and cotter-pins</a>"]
B --> N["<a href='/classifications/hs/v2017/731829'>731829: Iron or steel; non-threaded articles, n.e.c. in item no. 7318.2</a>"]

    

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