Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of iron or steel

HS v2022 Code: 7318

About screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of iron or steel

HS code 7318 covers a wide range of fastening hardware made of iron or steel, including screws, bolts, nuts, rivets, and washers. These products are essential components in numerous industries, from construction and manufacturing to automotive and machinery. They play a crucial role in holding together and securing various structures, components, and assemblies, making them indispensable for the functioning of the global economy.

Production process

The production of HS code 7318 items typically involves a combination of metalworking techniques, such as forging, casting, and machining. Raw materials, usually in the form of steel or iron, are shaped and processed into the desired fastener shapes and sizes. This may include cutting, threading, and heat treatment to achieve the required strength, durability, and finish. Automated machinery and precision tools are often employed to ensure consistent quality and high-volume output.

Production inputs

The main inputs required for the production of HS code 7318 items include steel or iron raw materials, as well as specialized machinery and tools for metalworking. Depending on the specific product, additional inputs such as lubricants, coatings, or packaging materials may also be necessary. The availability and cost of these inputs can significantly impact the overall production and supply of HS code 7318 items.

Production outputs

The primary outputs of HS code 7318 are a wide range of fastening hardware, including screws, bolts, nuts, rivets, washers, and similar articles. These products are then consumed by various industries, such as 7308 Structures and parts of structures, of iron or steel, 8708 Parts and accessories for vehicles, and 8429 Self-propelled bulldozers, angledozers, graders, levelers, scrapers, mechanical shovels, excavators, shovel loaders, tamping machines and road rollers, among others. The demand for HS code 7318 items is closely tied to the overall activity and growth of these downstream industries.

Family tree for screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of iron or steel

    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>"]

    A --> C["<a href='/classifications/hs/v2022/7301'>7301: Iron or steel sheet piling, whether or not drilled, punched or made from assembled elements; welded angles, shapes and sections, of iron or steel</a>"]
A --> D["<a href='/classifications/hs/v2022/7302'>7302: Railway or tramway track constructions of iron or steel; rails, check and track rails, switch blades, crossing frogs, point rods, sleepers, fish-plates, chair wedges, sole plates, bedplates, ties and the like</a>"]
A --> E["<a href='/classifications/hs/v2022/7303'>7303: Tubes, pipes and hollow profiles, of cast iron</a>"]
A --> F["<a href='/classifications/hs/v2022/7304'>7304: Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel</a>"]
A --> G["<a href='/classifications/hs/v2022/7305'>7305: Iron or steel (excluding cast iron); tubes and pipes (e.g. welded, riveted or similarly closed), having circular cross-sections, external diameter of which exceeds 406.4mm, not seamless</a>"]
A --> H["<a href='/classifications/hs/v2022/7306'>7306: Iron or steel (excluding cast iron); tubes, pipes and hollow profiles (not seamless), n.e.c. in chapter 73</a>"]
A --> I["<a href='/classifications/hs/v2022/7307'>7307: Tube or pipe fittings (e.g. couplings, elbows, sleeves), of iron or steel</a>"]
A --> J["<a href='/classifications/hs/v2022/7308'>7308: Structures of iron or steel and parts thereof; plates, rods, angles, shapes, sections, tubes and the like, prepared for use in structures</a>"]
A --> K["<a href='/classifications/hs/v2022/7309'>7309: Reservoirs, tanks, vats and similar containers; for any material (excluding compressed or liquefied gas), of iron or steel, capacity exceeding 300l, whether or not lined or heat insulated</a>"]
A --> L["<a href='/classifications/hs/v2022/7310'>7310: Tanks, casks, drums, cans, boxes and similar containers, for any material (excluding compressed or liquefied gas), of iron or steel, capacity not exceeding 300l, whether or not lined or heat-insulated</a>"]
A --> M["<a href='/classifications/hs/v2022/7311'>7311: Containers for compressed or liquefied gas, of iron or steel</a>"]
A --> N["<a href='/classifications/hs/v2022/7312'>7312: Stranded wire, ropes, cables, plaited bands, slings and the like, of iron or steel, not electrically insulated</a>"]
A --> O["<a href='/classifications/hs/v2022/7313'>7313: Barbed wire of iron or steel; twisted hoop or single flat wire, barbed or not and loosely twisted double wire, of a kind used for fencing, of iron or steel</a>"]
A --> P["<a href='/classifications/hs/v2022/7314'>7314: Cloth (including endless bands), grill, netting and fencing, of iron or steel wire; expanded metal of iron or steel</a>"]
A --> Q["<a href='/classifications/hs/v2022/7315'>7315: Chain and parts thereof, of iron or steel</a>"]
A --> R["<a href='/classifications/hs/v2022/7316'>7316: Anchors, grapnels and parts thereof, of iron or steel</a>"]
A --> S["<a href='/classifications/hs/v2022/7317'>7317: Nails, tacks, drawing pins, corrugated nails, staples (not those of heading no. 8305) and the like, of iron or steel, with heads of other material or not, but excluding articles with heads of copper</a>"]
A --> T["<a href='/classifications/hs/v2022/7319'>7319: Sewing and knitting needles, bodkins, crochet hooks, embroidery stilettos and similar articles, for use in the hand, of iron or steel; safety pins and other pins of iron or steel, not elsewhere specified or included</a>"]
A --> U["<a href='/classifications/hs/v2022/7320'>7320: Springs and leaves for springs, of iron or steel</a>"]
A --> V["<a href='/classifications/hs/v2022/7321'>7321: Stoves, ranges, grates, cookers (those with subsidiary boilers for central heating), barbecues, braziers, gas-rings, plate warmers and similar non-electric domestic appliances and parts, of iron or steel</a>"]
A --> W["<a href='/classifications/hs/v2022/7322'>7322: Radiators for central heating, not electrically heated and parts thereof, of iron or steel; air heaters, hot air distributors not electrically heated, with motor fan or blower</a>"]
A --> X["<a href='/classifications/hs/v2022/7323'>7323: Table, kitchen, other household articles and parts, of iron or steel; iron or steel wool; pot scourers and scouring or polishing pads, gloves and the like, of iron or steel</a>"]
A --> Y["<a href='/classifications/hs/v2022/7324'>7324: Sanitary ware and parts thereof, of iron or steel</a>"]
A --> Z["<a href='/classifications/hs/v2022/7325'>7325: Iron or steel; cast articles</a>"]
A --> BA["<a href='/classifications/hs/v2022/7326'>7326: Iron or steel; articles, n.e.c. in chapter 73</a>"]

    B --> BB["<a href='/classifications/hs/v2022/731811'>731811: Iron or steel; threaded coach screws</a>"]
B --> BC["<a href='/classifications/hs/v2022/731812'>731812: Iron or steel; threaded wood screws other than coach screws</a>"]
B --> BD["<a href='/classifications/hs/v2022/731813'>731813: Iron or steel; threaded screw hooks and screw rings</a>"]
B --> BE["<a href='/classifications/hs/v2022/731814'>731814: Iron or steel; threaded self-tapping screws</a>"]
B --> BF["<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 --> BG["<a href='/classifications/hs/v2022/731816'>731816: Iron or steel; threaded nuts</a>"]
B --> BH["<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 --> BI["<a href='/classifications/hs/v2022/731821'>731821: Iron or steel; non-threaded spring washers and other lock washers</a>"]
B --> BJ["<a href='/classifications/hs/v2022/731822'>731822: Iron or steel; non-threaded washers, excluding spring and lock</a>"]
B --> BK["<a href='/classifications/hs/v2022/731823'>731823: Iron or steel; non-threaded rivets</a>"]
B --> BL["<a href='/classifications/hs/v2022/731824'>731824: Iron or steel; non-threaded cotters and cotter-pins</a>"]
B --> BM["<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 level4
class D level4
class E level4
class F level4
class G level4
class H level4
class I level4
class J level4
class K level4
class L level4
class M level4
class N level4
class O level4
class P level4
class Q level4
class R level4
class S level4
class T level4
class U level4
class V level4
class W level4
class X level4
class Y level4
class Z level4
class BA level4
class BB level6
class BC level6
class BD level6
class BE level6
class BF level6
class BG level6
class BH level6
class BI level6
class BJ level6
class BK level6
class BL level6
class BM level6

  class B 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 B highlight