Iron or steel; threaded wood screws other than coach screws

HS v2022 Code: 731812

About iron or steel; threaded wood screws other than coach screws

HS code 731812 covers the classification of iron or steel threaded wood screws, excluding coach screws. These fasteners are essential components in a wide range of industries, from construction and furniture manufacturing to DIY projects and home repairs. Their versatility and durability make them a crucial part of the global hardware and fastener supply chain, supporting economic activity across numerous sectors.

Production process

The production of threaded wood screws typically involves a multi-step process. First, the raw material, which is usually iron or steel wire, is cut to the desired length. The wire is then fed into a threading machine, which creates the spiral threads along the length of the screw. Depending on the specific design, the screw head may be formed during this stage or added separately. Finally, the screws undergo various finishing processes, such as heat treatment, coating, or plating, to enhance their strength, corrosion resistance, and aesthetic appeal.

Production inputs

The main inputs required for the production of HS code 731812 items include iron or steel wire, threading machinery, and various finishing materials, such as coatings or platings. Additionally, the industry relies on a skilled workforce capable of operating the specialized equipment and ensuring consistent product quality. Energy sources, such as electricity or natural gas, are also necessary for the manufacturing process.

Production outputs

The primary output of HS code 731812 is threaded wood screws, which are used in a wide range of applications. These screws are commonly used in the construction industry for securing wood panels, framing, and other structural elements. They are also widely used in furniture manufacturing, cabinetry, and DIY projects. The output of this industry may be consumed by industries classified under 940320 Furniture; wooden; for the bedroom and 940340 Furniture; wooden; for the kitchen, among others.

Revisions to 731812

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 731812. The most recent 1 version of this code (731812) is in the HS v2022 system (this version):

This page shows the most recent version of code 731812.

Family tree for iron or steel; threaded wood screws other than coach screws

    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/v2022/731812'>731812: Iron or steel; threaded wood screws other than coach screws</a>"]

    B --> D["<a href='/classifications/hs/v2022/731811'>731811: Iron or steel; threaded coach screws</a>"]
B --> E["<a href='/classifications/hs/v2022/731813'>731813: Iron or steel; threaded screw hooks and screw rings</a>"]
B --> F["<a href='/classifications/hs/v2022/731814'>731814: Iron or steel; threaded self-tapping screws</a>"]
B --> G["<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 --> H["<a href='/classifications/hs/v2022/731816'>731816: Iron or steel; threaded nuts</a>"]
B --> I["<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 --> 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>"]

    

    %% Color coordination by level

    classDef level1 color:#000,fill:#a8f9ff,stroke:#333,stroke-width:2px
    classDef level2 color:#000,fill:#e0a458,stroke:#333,stroke-width:1px
    classDef level3 color:#000,fill:#419d78,stroke:#333,stroke-width:1px
    classDef level4 color:#000,fill:#c04abc,stroke:#333,stroke-width:1px
    classDef level5 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef level6 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef highlight color:#000,fill:#fff,stroke:#000,stroke-width:5px



  %% Apply classes
  class A level2
class B level4
class C level6
class D level6
class E level6
class F level6
class G level6
class H level6
class I level6
class J level6
class K level6
class L level6
class M level6
class N level6

  class C highlight

  %% class A level1
  %% class B,C level2
  %% class D,E,F,G,H,I level2
  %% class J,K,L,M,N,O,P level3
  %% class C highlight