Iron or steel; threaded screws, bolts and nuts n.e.c. in item no. 7318.1

HS v2022 Code: 731819

About iron or steel; threaded screws, bolts and nuts n.e.c. in item no. 7318.1

HS code 731819 covers a wide range of threaded iron or steel fasteners, including screws, bolts, and nuts that are not specifically classified elsewhere. These products play a crucial role in the construction, manufacturing, and automotive industries, enabling the secure assembly of various components and structures. As a fundamental hardware item, the global demand for these threaded fasteners remains consistently high, making this a significant segment within the broader metal products industry.

Production process

Threaded iron or steel fasteners are typically produced through a combination of metal forming and machining processes. The raw material, usually in the form of wire or bar stock, is first cut to the desired length. It is then threaded, either by rolling or cutting the threads onto the surface. Additional finishing steps, such as heat treatment or surface coating, may be applied to enhance the fastener's strength, corrosion resistance, or appearance.

Production inputs

The primary inputs for the production of HS code 731819 items include iron or steel wire/bar, threading machinery, and various tools and equipment for cutting, forming, and finishing the fasteners. Manufacturers may also require access to heat treatment facilities and surface coating technologies, depending on the specific product requirements. The availability of skilled labor, particularly in the areas of metal forming and machining, is another critical input for this industry.

Production outputs

The threaded iron or steel fasteners classified under HS code 731819 are used in a wide range of applications, including 731815 Iron or steel; threaded articles n.e.c. in item no. 7318.1, 731816 Iron or steel; nuts, and 731820 Iron or steel; spring washers and other lock washers. These fasteners are essential components in the assembly of machinery, vehicles, furniture, and various other industrial and consumer products. The output of this industry is a crucial input for numerous other manufacturing and construction activities.

Revisions to 731819

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 731819. The most recent 1 version of this code (731819) is in the HS v2022 system (this version):

This page shows the most recent version of code 731819.

Family tree for iron or steel; threaded screws, bolts and nuts n.e.c. in item no. 7318.1

    graph LR
    A["<a href='/classifications/hs/v2022/73'>73: Iron or steel articles</a>"]
A --> B["<a href='/classifications/hs/v2022/7318'>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/v2022/731819'>731819: Iron or steel; threaded screws, bolts and nuts n.e.c. in item no. 7318.1</a>"]

    B --> D["<a href='/classifications/hs/v2022/731811'>731811: Iron or steel; threaded coach screws</a>"]
B --> E["<a href='/classifications/hs/v2022/731812'>731812: Iron or steel; threaded wood screws other than coach screws</a>"]
B --> F["<a href='/classifications/hs/v2022/731813'>731813: Iron or steel; threaded screw hooks and screw rings</a>"]
B --> G["<a href='/classifications/hs/v2022/731814'>731814: Iron or steel; threaded self-tapping screws</a>"]
B --> H["<a href='/classifications/hs/v2022/731815'>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/v2022/731816'>731816: Iron or steel; threaded nuts</a>"]
B --> J["<a href='/classifications/hs/v2022/731821'>731821: Iron or steel; non-threaded spring washers and other lock washers</a>"]
B --> K["<a href='/classifications/hs/v2022/731822'>731822: Iron or steel; non-threaded washers, excluding spring and lock</a>"]
B --> L["<a href='/classifications/hs/v2022/731823'>731823: Iron or steel; non-threaded rivets</a>"]
B --> M["<a href='/classifications/hs/v2022/731824'>731824: Iron or steel; non-threaded cotters and cotter-pins</a>"]
B --> N["<a href='/classifications/hs/v2022/731829'>731829: Iron or steel; non-threaded articles, n.e.c. in item no. 7318.2</a>"]

    

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