HS code · 6-digit subheading
HS Code 7318.14 – Iron or steel; threaded self-tapping screws
HS code 7318.14 is the 6-digit subheading for iron or steel, threaded self-tapping screws. It is used for sheet metal screws, self-drilling screws (Tek screws), thread-forming screws, thread-cutting screws and drywall screws (often self-tapping).
What HS 7318.14 covers
This HS code specifically covers self-tapping screws made of iron or steel, which are engineered to tap their own mating thread when driven into a pre-drilled hole in materials such as metal, plastic, or sometimes wood. This innovative design eliminates the need for a separate tapping operation, significantly streamlining assembly processes across various manufacturing and construction industries. International trade is robust, with importers including the automotive industry, electronics manufacturers, sheet metal fabricators, construction companies, and hardware distributors. Exporters are typically specialized fastener manufacturers with advanced precision engineering capabilities. Key factors in trade include the screw's specific thread form (e.g., sheet metal, machine screw thread), point type (e.g., sharp point, blunt point, self-drilling), head style, material hardness, and corrosion resistance, all critical for optimal performance in diverse applications.
- Covers
- Sheet metal screws
- Self-drilling screws (Tek screws)
- Thread-forming screws
- Thread-cutting screws
- Drywall screws (often self-tapping)
- Plastic screws
- Wafer head self-tappers
- Examples
- SFS intec self-drilling screws
- ITW Buildex Tek screws
- Phillips II self-tapping screws
- Hilti self-tapping anchors
Codes often confused with 7318.14
Common mistake. Often confused with 731812 (wood screws) if used in wood, or 731815 (other threaded screws) if their self-tapping capability is not explicitly recognized, or even 731700 (nails) due to similar applications but different fastening mechanisms.
Top exporters and importers of HS code 731814, 2025
In 2025, the largest exporter of HS code 731814 in UN Comtrade data was Taiwan, with about 32% of world exports; the largest importer in UN Comtrade data was the United States, with 26% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 Taiwan* ~$1.6B 32% of world exports · partner records ↗
- 2 China $1.1B 22% of world exports
- 3 Germany $728M 14% of world exports
World total: $5.1B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $1.1B 26% of world imports
- 2 Germany $416M 9.4% of world imports
- 3 France $170M 3.8% of world imports
World total: $4.4B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. UN Comtrade records Taiwan as "Other Asia, not elsewhere specified". Saudi Arabia's exports under that code are left out: they are far too large to be trade with Taiwan, so mostly undisclosed partners. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for 7318.14
Brazil does not split HS 7318.14: its NCM code is 7318.14.00.
All Brazil NCM codes in heading 73.18 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
EU Regulatory Requirements
This product falls under the Carbon Border Adjustment Mechanism (CBAM). Importers to the EU must declare embedded carbon emissions and purchase CBAM certificates.
Questions about HS 7318.14
What is HS code 731814?
HS code 731814 is a 6-digit subheading in the Harmonized System that covers: Iron or steel; threaded self-tapping screws. This HS code specifically covers self-tapping screws made of iron or steel, which are engineered to tap their own mating thread when driven into a pre-drilled hole in materials such as metal, plastic, or sometimes wood. This innovative design eliminates the need for a separate tapping operation, significantly streamlining assembly processes across various manufacturing and construction industries. International trade is robust, with importers including the automotive industry, electronics manufacturers, sheet metal fabricators, construction companies, and hardware distributors. Exporters are typically specialized fastener manufacturers with advanced precision engineering capabilities. Key factors in trade include the screw's specific thread form (e.g., sheet metal, machine screw thread), point type (e.g., sharp point, blunt point, self-drilling), head style, material hardness, and corrosion resistance, all critical for optimal performance in diverse applications.
What products fall under HS code 731814?
Sheet metal screws, self-drilling screws (Tek screws), thread-forming screws, thread-cutting screws, drywall screws (often self-tapping), plastic screws, wafer head self-tappers
What are common misclassifications for HS code 731814?
Often confused with 731812 (wood screws) if used in wood, or 731815 (other threaded screws) if their self-tapping capability is not explicitly recognized, or even 731700 (nails) due to similar applications but different fastening mechanisms.
Which countries are the top exporters of goods under HS code 731814?
In 2025, the top exporters of HS code 731814 in UN Comtrade data were Taiwan (about $1.6B, 32% of world exports), China ($1.1B) and Germany ($728M). World exports came to about $5.1B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of goods under HS code 731814?
In 2025, the top importers of HS code 731814 in UN Comtrade data were the United States ($1.1B, 26% of world imports), Germany ($416M) and France ($170M). World imports came to about $4.4B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
How is HS code 731814 structured?
HS code 731814 is a 6-digit subheading under the Harmonized System. The first 2 digits (73) identify the chapter, digits 3-4 (18) identify the heading, and digits 5-6 (14) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 731814?
In Brazil, HS code 731814 is NCM 7318.14.00. The last two digits are 00 because Brazil does not split this HS code further.