💾 Data Updated: Latest version • Last updated: December 09, 2025

7315.81.00.00 - Stud link 🖩

Details

FieldValue
Unit of Quantitykg
General Rate of Duty (Column 1 - General)Free
Special Rate of Duty (Column 1 - Special)N/A
Column 2 Rate of Duty4.4¢/kg
Quota QuantityN/A
Additional DutiesN/A
About Duty Rates: Rates are divided into Column 1 and Column 2. Column 1 is subdivided into General (normal trade relations rates for all countries not eligible for special programs) and Special (preferential rates for countries with free trade agreements or preference programs). Column 2 rates apply to products from Cuba, North Korea, Belarus, and Russia. When no special rate exists for a classification, General rates apply.

Overview

This classification, 7315.81.00.00, specifically covers "stud link" chain and parts thereof, manufactured from iron or steel. Stud link chain is characterized by the presence of studs or crossbars connecting the links, which significantly increases its strength and resistance to deformation. These studs are typically welded or cast as an integral part of the link. Such chains are commonly employed in demanding applications where durability and load-bearing capacity are paramount, such as in anchor chains for vessels, towing operations, and heavy industrial lifting.

It is crucial to distinguish this category from its siblings. While 7315.82 covers "other, welded link" chain, it does not necessitate the inclusion of studs. Similarly, 7315.89 encompasses all other types of chain that do not fit the criteria for stud link or other specific welded link categories. Therefore, the defining feature of 7315.81.00.00 is the presence of the characteristic stud, a structural element absent in other "other chain" classifications.

As this is a leaf node within the HTS, there are no further subcategories under 7315.81.00.00. Classification at this level is determined by the presence of the stud link feature, distinguishing it from simpler welded or other types of chain within heading 7315. The material composition (iron or steel) and the nature of the links as forming a chain are assumed from the parent categories.

Frequently Asked Questions

›What is HTS code 7315.81.00.00?
HTS code 7315.81.00.00 covers Stud link under the US Harmonized Tariff Schedule. It falls under Chapter 73: Articles of iron or steel.
›What products are classified under 7315.81.00.00?
This classification covers Stud link. It is a subcategory of Other chain:.
›What is the import duty rate for 7315.81.00.00?
The general rate of duty for HTS 7315.81.00.00 is Free. The Column 2 rate is 4.4¢/kg.
›What unit of quantity is used for 7315.81.00.00?
Imports under HTS 7315.81.00.00 are measured in kg.

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