Iron or steel; threaded coach screws

HS v2017 Code: 731811

About iron or steel; threaded coach screws

HS code 731811 covers iron or steel threaded coach screws, which are an essential fastener used in a variety of construction and industrial applications. These screws play a crucial role in securing and joining different materials, making them an integral component in the broader hardware and fastener industry. Their widespread use across sectors such as building, furniture manufacturing, and automotive highlights their importance in the global economy.

Production process

Threaded coach screws are typically manufactured through a process of cold heading or hot forging. In the cold heading method, a steel wire or rod is fed into a die and then struck with a punch to form the screw head and threads. The hot forging process involves heating the steel to high temperatures and then shaping it into the desired form using specialized dies and hammers. Both techniques result in a strong, durable fastener that can withstand significant loads and stresses.

Production inputs

The primary raw material required for the production of HS code 731811 coach screws is high-quality steel, which is sourced from steel mills and suppliers. Manufacturers also rely on specialized machinery, such as cold heading machines or forging presses, to shape the steel into the final screw form. Additional inputs may include lubricants, heat treatment equipment, and quality control systems to ensure the consistency and reliability of the finished products.

Production outputs

Threaded coach screws produced under HS code 731811 are used in a wide range of applications, including construction, furniture assembly, and industrial equipment installation. These screws are often consumed by industries covered by other HS codes, such as 940320 Wood furniture and 870899 Parts and accessories for motor vehicles.

Revisions to 731811

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 731811. The most recent 1 version of this code (731811) is in the HS v2022 system:

This page shows a legacy version of code 731811 ( HS v2017).

Newer versions
Older versions

Family tree for iron or steel; threaded coach screws

    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/v2017/731811'>731811: Iron or steel; threaded coach screws</a>"]

    B --> D["<a href='/classifications/hs/v2017/731812'>731812: Iron or steel; threaded wood screws other than coach screws</a>"]
B --> E["<a href='/classifications/hs/v2017/731813'>731813: Iron or steel; threaded screw hooks and screw rings</a>"]
B --> F["<a href='/classifications/hs/v2017/731814'>731814: Iron or steel; threaded self-tapping screws</a>"]
B --> G["<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 --> H["<a href='/classifications/hs/v2017/731816'>731816: Iron or steel; threaded nuts</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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