HTS Code · Chapter 73 · Updated Oct 26, 2026

7315.81.00.00Stud link

Also written 7315810000 and 7315.81.0000

HTS Code 7315.81.00.00 covers any article best defined as Base Metals and Articles of Base MetalArticles of iron or steelChain and parts thereof, of iron or steel:Other chain:Stud link in the Harmonized Tariff Schedule.

From China, the total duty on 7315.81.00.00 last changed on Apr 6, 2026, from 35% to 75%. It has changed 2 times since Nov 17, 2025.

Estimated Duty on 7315.81.00.00

$10,000.00 by ocean, entered Oct 26, 2026

Country of origin

China

Total duty: 75%; $7,500.00 on this shipment
Fees: 0.47%; MPF + HMF · $47.14
Duty + fees: 75.47%; Payable to CBP
Landed cost: $17,547.14; On $10,000.00 customs value

Section 232 – Steel, Aluminum & Copper50%
Section 301 – China25%
Customs fees0.47%

Chapter 99 lines9903.82.02 Section 232 Metals9903.88.03 Section 301 China: List 3

4 exemptions could lower this

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Base Duty Rates for 7315.81.00.00

From the Harmonized Tariff Schedule

General Rate of Duty: Free
Special Rate of Duty: —
Column 2 (Non-NTR): 4.4¢/kg
Units of Quantity: kg

Total duty by countryAll 20 →

China75%
Mexico50%
Canada50%
Vietnam50%
Germany50%

Tariffs by country · Oct 26, 2026

US Import Duty on HTS 7315.81.00.00 by Country of Origin

As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from China pay 75% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%) and Section 301 – China (25%). Of the 20 largest sources of US imports, the lowest total is 50%, from Mexico, Canada and 17 more.

Total duty from China

75%

Base rate plus 2 additional tariffs

Lowest total duty

50%

From Mexico, Canada and 17 more

Countries with additional tariffs

20 of 20

Section 232, 301 and other Chapter 99 duties

Country of origin	Base rate	Additional tariffs	Total duty
China	Free	Section 232 – Steel, Aluminum & Copper50%9903.82.02 Section 301 – China25%9903.88.03	75%
Mexico	Free	Section 232 – Steel, Aluminum & Copper50%9903.82.02	50%
Canada	Free	Section 232 – Steel, Aluminum & Copper50%9903.82.02	50%
Vietnam	Free	Section 232 – Steel, Aluminum & Copper50%9903.82.02	50%
Germany	Free	Section 232 – Steel, Aluminum & Copper50%9903.82.02	50%
Japan	Free	Section 232 – Steel, Aluminum & Copper50%9903.82.02	50%
South Korea	Free	Section 232 – Steel, Aluminum & Copper50%9903.82.02	50%
Taiwan	Free	Section 232 – Steel, Aluminum & Copper50%9903.82.02	50%
India	Free	Section 232 – Steel, Aluminum & Copper50%9903.82.02	50%
Ireland	Free	Section 232 – Steel, Aluminum & Copper50%9903.82.02	50%
Italy	Free	Section 232 – Steel, Aluminum & Copper50%9903.82.02	50%
Switzerland	Free	Section 232 – Steel, Aluminum & Copper50%9903.82.02	50%
Thailand	Free	Section 232 – Steel, Aluminum & Copper50%9903.82.02	50%
Malaysia	Free	Section 232 – Steel, Aluminum & Copper50%9903.82.02	50%
United Kingdom	Free	Section 232 – Steel, Aluminum & Copper50%9903.82.02	50%
France	Free	Section 232 – Steel, Aluminum & Copper50%9903.82.02	50%
Indonesia	Free	Section 232 – Steel, Aluminum & Copper50%9903.82.02	50%
Brazil	Free	Section 232 – Steel, Aluminum & Copper50%9903.82.02	50%
Bangladesh	Free	Section 232 – Steel, Aluminum & Copper50%9903.82.02	50%
Cambodia	Free	Section 232 – Steel, Aluminum & Copper50%9903.82.02	50%

Duty from each country, in words

As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from China pay 75% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%) and Section 301 – China (25%).
As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from Mexico pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).
As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from Canada pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).
As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from Vietnam pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).
As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from Germany pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).
As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from Japan pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).
As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from South Korea pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).
As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from Taiwan pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).
As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from India pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).
As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from Ireland pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).
As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from Italy pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).
As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from Switzerland pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).
As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from Thailand pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).
As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from Malaysia pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).
As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from United Kingdom pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).
As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from France pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).
As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from Indonesia pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).
As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from Brazil pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).
As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from Bangladesh pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).
As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from Cambodia pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).

Duties on goods entered Oct 26, 2026 at the general rate (Column 2 where it applies), with tariff data verified through 2026 HTS Revision 20. Totals are before customs fees (MPF, HMF) and any antidumping or countervailing duties (AD/CVD); with a free account, the calculator checks the AD/CVD cases that may cover your import. Some tariffs and exemptions depend on details such as metal content or end use, which the calculator asks about. See US tariffs for every country.

Calculate Duty for Your Shipment

Duty history · since Nov 17, 2025

Duty History for HTS 7315.81.00.00

From China, the total duty on HTS 7315.81.00.00 is 75% as of Oct 26, 2026, up from 45% on Nov 17, 2025. It fell to 35% on Feb 24, 2026 and rose to 75% on Apr 6, 2026.

Changes from China

Apr 6, 2026
35% → 75%
Now applies: Section 232 – Steel, Aluminum & Copper (50%), 9903.82.02
No longer applies: Section 122 – Balance of Payments Surcharge (10%), 9903.03.01
Source: Proclamation 11021
Feb 24, 2026
45% → 35%
Now applies: Section 122 – Balance of Payments Surcharge (10%), 9903.03.01
No longer applies: IEEPA – China and Hong Kong (Fentanyl) (10%), 9903.01.24; IEEPA – Reciprocal Tariffs (10%), 9903.01.25
Source: Proclamation 11012

By Country of Origin

Country of origin	Nov 17, 2025	Oct 26, 2026	Changes	Last change
China	45%	75%	2	Apr 6, 2026: 35% → 75%
Mexico	25%	50%	2	Apr 6, 2026: 10% → 50%
Canada	35%	50%	2	Apr 6, 2026: 10% → 50%
Vietnam	20%	50%	2	Apr 6, 2026: 10% → 50%
Germany	15%	50%	2	Apr 6, 2026: 10% → 50%
Japan	15%	50%	2	Apr 6, 2026: 10% → 50%
South Korea	15%	50%	2	Apr 6, 2026: 10% → 50%
Taiwan	20%	50%	2	Apr 6, 2026: 10% → 50%
India	50%	50%	3	Apr 6, 2026: 10% → 50%
Ireland	15%	50%	2	Apr 6, 2026: 10% → 50%

Total duty on goods entered on each date at the general rate, before customs fees (MPF, HMF) and any antidumping or countervailing duties, from the same tariff data as the duty calculator. History starts on Nov 17, 2025, the first date our tariff data is verified for. Changes that only swapped one tariff for another at the same rate are listed but don't count toward the totals' changes.

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New tariff action affects 1 of your imports

7315.81.00.00from China75% → 85%

Its rate today, if a new 10% tariff were added

Top origins · US imports 2025

Top Origins: Countries the US Imports HTS 7315.81.00.00 From

In 2025 the US imported $6M of stud link (HTS 7315.81.00.00), down 64% on 2024, mostly from China (58%), South Korea (21%) and India (10%). Each country's total duty today is shown beside its imports.

Country of origin	US imports, 2025	Share	vs 2024	Total duty today
China	$3M	58%	36%	75%
South Korea	$1M	21%	87%	50%
India	$586K	10%	251%	50%
Canada	$223K	4%	67%	50%
Italy	$185K	3%	214%	50%
Germany	$110K	2%	71%	50%
Japan	$35K	1%	53%	50%
Netherlands	$17K	0%	83%	50%
Switzerland	$13K	0%	86%	50%
Israel	$13K	0%	New	50%

Source: U.S. Census Bureau, general imports. Duty on a $10,000 ocean shipment entered today, before customs fees. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Legal notes

Relevant HTS Notes

Official USITC notes that may affect classification under HTS 7315.81.00.00.

Section 15 NotesBase Metals and Articles of Base Metal Chapter 73 NotesArticles of iron or steel

CBP rulings

Related CROSS Rulings for HTS 7315.81.00.00

CBP classification rulings related to 7315.81.00.00. Open a ruling to read how Customs classified a similar product.

No rulings found

No CROSS classification rulings were found for HTS code "7315.81.00".

Questions

HTS 7315.81.00.00 FAQ

Something else? Ask us.

What does HTS code 7315.81.00.00 cover?

HTS code 7315.81.00.00 covers stud link, classified under Chapter 73 (Articles of iron or steel) in the US Harmonized Tariff Schedule. The general duty rate is Free.

What is the duty rate for HTS 7315.81.00.00?

The general (Column 1) rate of duty for HTS 7315.81.00.00 is Free. The Column 2 rate, for countries without normal trade relations, is 4.4¢/kg. Additional Chapter 99 tariffs, such as Section 301 and Section 232, can apply on top depending on the country of origin.

What is the US tariff on stud link (HTS 7315.81.00.00) from China?

Has the US duty on HTS 7315.81.00.00 from China changed?

From China, the total duty on HTS 7315.81.00.00 is 75% as of Oct 26, 2026, up from 45% on Nov 17, 2025. It fell to 35% on Feb 24, 2026 and rose to 75% on Apr 6, 2026. On Apr 6, 2026, Section 232 – Steel, Aluminum & Copper (50%) started to apply and Section 122 – Balance of Payments Surcharge (10%) stopped applying.

What is the US tariff on stud link (HTS 7315.81.00.00) from Vietnam?

As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from Vietnam pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).

What is the US tariff on stud link (HTS 7315.81.00.00) from Mexico?

As of Oct 26, 2026, US imports of stud link (HTS 7315.81.00.00) from Mexico pay 50% in duties: a duty-free base rate plus Section 232 – Steel, Aluminum & Copper (50%).

Where does the US import HTS 7315.81.00.00 from?

In 2025 the US imported $6M of stud link under HTS 7315.81.00.00, mostly from China (58%), South Korea (21%) and India (10%), according to U.S. Census Bureau import data.

Which country has the lowest US duty on HTS 7315.81.00.00?

Of the 20 largest sources of US imports, the lowest total duty on HTS 7315.81.00.00 is 50%, from Mexico, Canada and 17 more, as of the tariffs in effect on 2026-10-26.

Sources

Primary Sources

The official documents behind the rates and tariffs on this page. Duties are worked out from them as of Revision 20 (2026); check the legal text before you file.