Iron or steel; threaded coach screws

HS v2022 Code: 731811

About iron or steel; threaded coach screws

HS code 731811 covers threaded coach screws made of iron or steel. These fasteners are essential components in the construction and automotive industries, used to securely join wood, metal, and other materials. As a critical input for a wide range of products, the threaded coach screw industry plays a vital role in supporting global trade and economic development.

Production process

Threaded coach screws are typically manufactured through a multi-step process. First, the raw material, either iron or steel, is cut and formed into the desired shape and size. The threads are then created using specialized threading machines, which cut the grooves into the screw's surface. Finally, the screws undergo various finishing processes, such as heat treatment or coating, to enhance their strength, durability, and corrosion resistance.

Production inputs

The main inputs required for the production of threaded coach screws include iron or steel raw materials, threading machinery, and various finishing equipment. Manufacturers may also rely on specialized tools, lubricants, and quality control systems to ensure the consistent production of high-quality fasteners. The availability and cost of these inputs can significantly impact the industry's overall competitiveness.

Production outputs

Threaded coach screws produced under HS code 731811 are primarily used in the construction, automotive, and industrial equipment sectors. These fasteners are often consumed by manufacturers of 940320 wooden furniture, 870000 motor vehicles, and 842199 machinery, among other industries. The widespread demand for these versatile and reliable screws highlights their importance in supporting the global economy.

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 version):

This page shows the most recent version of code 731811.

Family tree for iron or steel; threaded 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/v2022/731811'>731811: Iron or steel; threaded coach screws</a>"]

    B --> D["<a href='/classifications/hs/v2022/731812'>731812: Iron or steel; threaded wood screws other than 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