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

7318.15.40.00 - Machine screws 9.5 mm or more in length and 3.2 mm or more in diameter (not including cap screws) 🖩

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 Duty2.2¢/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 HTS category, 7318.15.40.00, specifically classifies machine screws that meet defined dimensional criteria. To fall within this subcategory, the screws must be 9.5 millimeters or more in length and 3.2 millimeters or more in diameter. Importantly, this classification excludes cap screws, which are differentiated by their distinct head designs.

Distinguishing this category from its siblings, 7318.15.20 covers bolts, along with their nuts or washers, when imported or exported together. Category 7318.15.50 is reserved for studs, which are threaded rods without heads. This subcategory, 7318.15.40.00, therefore, serves as a specific grouping for machine screws based on their size and the exclusion of cap screw types.

As this is a leaf node in the HTS structure, there are no further subcategories. Classification under 7318.15.40.00 relies solely on the precise measurement of length and diameter, coupled with the understanding that the item is a screw intended for use in machinery, and not a cap screw or a bolt. This ensures a granular level of detail for accurate import and export declarations.

Frequently Asked Questions

›What is HTS code 7318.15.40.00?
HTS code 7318.15.40.00 covers Machine screws 9.5 mm or more in length and 3.2 mm or more in diameter (not including cap screws) under the US Harmonized Tariff Schedule. It falls under Chapter 73: Articles of iron or steel.
›What products are classified under 7318.15.40.00?
This classification covers Machine screws 9.5 mm or more in length and 3.2 mm or more in diameter (not including cap screws). It is a subcategory of Other screws and bolts, whether or not with their nuts or washers: (7318.15).
›What is the import duty rate for 7318.15.40.00?
The general rate of duty for HTS 7318.15.40.00 is Free. The Column 2 rate is 2.2¢/kg.
›What unit of quantity is used for 7318.15.40.00?
Imports under HTS 7318.15.40.00 are measured in kg.

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