| HS Code | Official Doc | Tariff Rate | Origin | Destination | Effective Date |
|---|---|---|---|---|---|
| 8807909060 | Doc | 55.0% | CN | US | 2025-05-12 |
| 8807909015 | Doc | 55.0% | CN | US | 2025-05-12 |
| 7318152061 | Doc | 80.0% | CN | US | 2025-05-12 |
| 7318152065 | Doc | 80.0% | CN | US | 2025-05-12 |
Hexagon Bolt
A hexagon bolt is a fastener with a hexagonal (six-sided) head, threaded along its length for insertion into a nut or tapped hole. It is one of the most common and versatile types of fasteners in the world.
Material:
Hexagon bolts are manufactured from a wide range of materials, selected based on the required strength, corrosion resistance, and application temperature. Common materials include:
- Carbon Steel: Most frequently used due to its strength and cost-effectiveness. Often coated with zinc, cadmium, or other finishes to improve corrosion resistance. Grades include SAE Grade 2, 5, and 8, indicating increasing tensile strength.
- Alloy Steel: Offers higher strength and toughness than carbon steel. Used in critical applications requiring significant load-bearing capacity.
- Stainless Steel: Provides excellent corrosion resistance, making it suitable for outdoor and marine environments. Common grades include 304 and 316.
- Aluminum Bronze: Used in applications requiring high corrosion resistance and non-magnetic properties.
- Brass: Used in applications where corrosion resistance and aesthetic appearance are important.
Purpose:
The primary purpose of a hexagon bolt is to securely fasten two or more components together. They are used in a vast array of applications, providing clamping force when tightened.
Function:
Hexagon bolts function by converting rotational force into linear clamping force. The threads engage with corresponding threads in a nut or tapped hole, drawing the components together. The hexagonal head allows for tightening using a wrench or socket.
Usage Scenarios:
- Construction: Framing, structural connections, anchoring.
- Automotive: Engine components, chassis assembly, suspension systems.
- Machinery: Assembly of various mechanical components.
- Furniture: Joining wooden or metal parts.
- Plumbing: Connecting pipes and fittings.
- General Assembly: A wide range of applications where a strong, reliable fastener is needed.
Common Types:
- Fully Threaded Hex Bolts: Threads extend along the entire length of the bolt. Often used with nuts or in tapped holes where a longer threaded section is required.
- Partially Threaded Hex Bolts: Threads are present only along a portion of the bolt's length. Commonly used in structural applications where the unthreaded shank provides a bearing surface.
- Flange Hex Bolts: Feature a circular flange under the head, providing a larger bearing surface and increased clamping force. Used in applications where a wider distribution of load is needed.
- Socket Head Cap Screws (SHCS): A type of hexagon bolt with a cylindrical head. Commonly used in machinery and equipment assembly.
- Carriage Bolts: Feature a rounded head and a square shank. Often used in wood construction.
- Hex Structural Bolts: High-strength bolts used in structural steel connections, conforming to specific standards (e.g., ASTM A325, A490).
Standards:
Hexagon bolts are manufactured to various standards, including:
- ISO: International Organization for Standardization.
- DIN: Deutsches Institut für Normung (German Institute for Standardization).
- ASTM: American Society for Testing and Materials.
- ANSI: American National Standards Institute.
These standards specify dimensions, materials, mechanical properties, and testing requirements.
Based on the provided information, the following HS codes are relevant to “hexagon bolt”:
-
7318152061: 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: Bolts and bolts and their nuts or washers entered or exported in the same shipment Having shanks or threads with a diameter of
6 mm or more: Other: With hexagonal heads: Of stainless steel. This code specifically covers hexagon head bolts made of stainless steel, with a shank or thread diameter of 6mm or more, and potentially shipped with nuts and washers. -
7318152065: 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: Bolts and bolts and their nuts or washers entered or exported in the same shipment Having shanks or threads with a diameter of
6 mm or more: Other: With hexagonal heads: Other. This code covers hexagon head bolts made of iron or steel (excluding stainless steel), with a shank or thread diameter of 6mm or more, and potentially shipped with nuts and washers.
Tax Rate Information:
Both HS codes 7318152061 and 7318152065 share the following tax details:
- Basic Tariff: 0.0%
- Additional Tariff: 25.0%
- Additional Tariff (after April 2, 2025): 30.0%
- Total Tariff: 80.0% (due to the 25% additional tariff on steel and aluminum products)
Important Note:
Regarding HS codes 7318152061 and 7318152065, please note the 25% additional tariff applies to steel and aluminum products. Material verification may be required to determine the correct classification and applicable tariff rate.