HS code · 6-digit international subheading
HS Code 731815
Screws, HS 7318.15.
Official description: Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel: Threaded articles: Other screws and bolts, whether or not with their nuts or washers
Where to check the import duty for HS 731815
The first 6 digits are the same everywhere. Duty and VAT or GST are set by your country, on the full national tariff line with China as the country of origin. Each link below opens the official source at 731815, its heading or its chapter where the site allows it.
How to read United States
The search runs on 7318.15 and lists the US lines under it. Your rate depends on the full 10-digit HTS line, and Section 301 surcharges for China origin sit on top of the base rate.
Then look up the full national code with China as the country of origin, and note the date you checked.
Deep link, with the code as a parameter
https://hts.usitc.gov/search?query=7318.15
Rates are only shown where our data names its source and date. Everything else says check the official source. Duty, VAT and GST rates change, so confirm them before you price a product.
Short answer
What HS code 731815 means for your import
HS code 731815 is the 6-digit HS 2022 starting point for screws; often searched as bolts, threaded fasteners, machine screws. Before you use it in a landed-cost estimate, check the product's material and function against the official tariff of your country. A code from a supplier is a clue. It is not the final import classification.
- UseStart with this 6-digit HS code and compare the product's material, function, and use.
- VerifyCheck the destination market's official HTS, TARIC, commodity-code, duty, VAT, or GST source.
- DecideIf the code or the documents are unclear, ask us for a free quote. We suggest the likely code and price the duty in.
Covered products
What products fall under HS code 731815?
Buyers often describe products under HS 731815 in these ways. If your product matches, 731815 is a likely 6-digit starting point. Confirm the material and intended use against the official tariff.
- screws
- bolts
- threaded fasteners
- machine screws
- hex bolts
- carriage bolts
US import duty · China origin
US import duty for HS 731815
Published USITC HTS rates for the 5 US tariff lines under HS 731815. This is a research estimate. Your rate depends on your full 10-digit HTS line.
Source: USITC HTS (base MFN) and Section 301 overlay · data as of 2026-07-05. Rates change with trade actions. Confirm your full 10-digit line on hts.usitc.gov before you price a product. Sources for other markets are above.
Other HS codes under 7318
Other subheadings in heading 7318 (Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel). If 731815 is not an exact match, one of these may fit your product better.
Explore Articles of iron or steel
Same chapter, other headings. Chapter 73 covers articles of iron or steel.
HS code 731815: common questions
What is the US import duty for HS code 731815 from China?
As published in the USITC HTS (data as of 2026-07-05), 731815 splits into 5 US tariff lines. Their base MFN rate averages about 2.9%. Section 301 adds +25% for China-origin goods on these lines, so base rate plus Section 301 averages roughly 27.9%. This is a research estimate. Your rate depends on your full 10-digit HTS line, so check it on hts.usitc.gov.
What is HS code 731815?
HS code 731815 is the World Customs Organization 6-digit HS 2022 subheading for "Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel: Threaded articles: Other screws and bolts, whether or not with their nuts or washers". The first two digits (73) are the chapter: Articles of iron or steel. Digits 3-4 (7318) are the heading. Countries add more digits for their national tariff line, for example 10 digits in the US HTS.
What products fall under HS 731815?
Common products classified under 731815 include screws, bolts, threaded fasteners, machine screws, hex bolts, carriage bolts and similar items. The correct code still depends on the product's material, function and intended use.
How do I find the import duty for HS code 731815?
Duty is set by the destination country, not by the 6-digit HS code alone. Start from the official tariff of your market. The links on this page open USITC HTS (US) and TARIC (EU) at 731815, the UK Trade Tariff at heading 7318 and the Australian tariff at chapter 73. Then look up the full national code with China as the country of origin.
Is HS code 731815 the same in every country?
The first 6 digits (731815) are the same worldwide under the WCO Harmonized System. Beyond that, each country extends the code (HTS in the US, TARIC in the EU, etc.) and sets its own duty and tax rates.
Can I trust the HS code a Chinese supplier gives me?
Treat it as a clue. Supplier codes are often China export codes, and they can be incomplete or wrong for your country. Check it against the official tariff and your product's real material and use.
Is HSN code 731815 the same as HS code 731815?
Yes at the 6-digit level. India's HSN (Harmonized System of Nomenclature) uses the same WCO base, so HSN 731815 covers the same products as HS 731815. India then extends it to 8 digits for GST and customs. Check the Indian Customs tariff (CBIC) for the full national line.
Classify my product
Sourcing products under HS 731815 from China?
Get a free quote with supplier options, the HS code we would use and the landed cost to your country. 5,754 HS codes covered.
Get a free quote Back to duty checker
Bobby reads your requestWe reply within one business day