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

7318.16.00.30 - Locking 🖩

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 Duty0.5%
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 HTS classification covers locking nuts specifically designed for industrial and automotive applications, made from iron or steel. These nuts are characterized by mechanisms incorporated within their design that prevent loosening due to vibration or stress. Examples include nuts with built-in locking elements such as deformed threads, inserts, or prevailing torque features.

This category is distinguished from its sibling, 7318.16.00.15, by the explicit presence of a locking function. While 7318.16.00.15 refers to non-locking, chrome-plated lug nuts, this category encompasses any lug nut with a locking feature, regardless of plating. It also differs from the "Other" category (7318.16.00.45) by specifically detailing nuts that possess an integrated locking mechanism.

As this is a leaf node, there are no further subcategories. The classification is based on the definitive characteristic of the nut's ability to resist loosening. Therefore, when classifying, the primary consideration is whether the article functions as a locking nut, differentiating it from standard nuts or those with alternative finishes or configurations.

Frequently Asked Questions

›What is HTS code 7318.16.00.30?
HTS code 7318.16.00.30 covers Locking under the US Harmonized Tariff Schedule. It falls under Chapter 73: Articles of iron or steel.
›What products are classified under 7318.16.00.30?
This classification covers Locking. It is a subcategory of Lugnuts:.
›What is the import duty rate for 7318.16.00.30?
The general rate of duty for HTS 7318.16.00.30 is Free. The Column 2 rate is 0.5%.
›What unit of quantity is used for 7318.16.00.30?
Imports under HTS 7318.16.00.30 are measured in kg.

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