| HS Code | Official Doc | Tariff Rate | Origin | Destination | Effective Date |
|---|---|---|---|---|---|
| 8467290040 | Doc | 37.5% | CN | US | 2025-05-12 |
| 8467290040 | Doc | 37.5% | CN | US | 2025-05-12 |
| 8487900080 | Doc | 83.9% | CN | US | 2025-05-12 |
| 8487900040 | Doc | 58.9% | CN | US | 2025-05-12 |
| 9602001080 | Doc | 40.5% | CN | US | 2025-05-12 |
| 9602005080 | Doc | 40.2% | CN | US | 2025-05-12 |
| 9620003090 | Doc | The rate applicable to the article of which it is an accessory+30.0% | CN | US | 2025-05-12 |
| 9620006500 | Doc | 57.9% | CN | US | 2025-05-12 |
A nut gun, also known as an impact wrench, is a power tool used for tightening or loosening nuts and bolts. It delivers high torque output with minimal effort by storing energy in a rotating mass, then releasing it suddenly to deliver a powerful impact.
Material
Nut guns are typically constructed from:
- Housing: Aluminum alloy, composite plastics, or a combination for durability and weight reduction.
- Motor: Electric or pneumatic (air-powered). Electric models utilize brushless or brushed DC motors.
- Impact Mechanism: Hardened steel alloys, including chrome molybdenum steel, for withstanding high stress.
- Anvil & Socket Retainer: Heat-treated steel for socket retention and force transfer.
- Hammer & Gears: Hardened steel alloys.
Purpose
The primary purpose of a nut gun is to efficiently and rapidly tighten or loosen fasteners, particularly in applications where manual tools would be insufficient or too time-consuming.
Function
Nut guns function by:
- Rotation: The motor spins a rotating mass (hammer).
- Energy Storage: Kinetic energy builds up in the rotating mass.
- Impact Delivery: A mechanism releases the stored energy as a rotational impact force. This impact is applied to the socket, driving the nut or bolt.
- Repetition: This process repeats rapidly until the fastener is loosened or tightened to the desired torque.
Usage Scenarios
- Automotive Repair: Removing lug nuts, tightening suspension components, engine work.
- Construction: Assembling steel structures, tightening bolts in heavy machinery.
- Manufacturing: Assembly line applications, fastening components.
- Maintenance & Repair: General fastening tasks in industrial settings.
- Tire Service: Rapid removal and installation of lug nuts on vehicles.
Common Types
- Pneumatic Impact Wrenches (Air Impact Wrenches):
- Advantages: High power, relatively lightweight, durable.
- Disadvantages: Requires an air compressor, can be noisy.
- Drive Sizes: Commonly available in 1/4", 3/8", 1/2", 3/4", and 1" drive sizes.
- Electric Impact Wrenches (Corded & Cordless):
- Advantages: Portable (cordless), no compressor needed, quieter than pneumatic models.
- Disadvantages: Can be heavier than pneumatic models, battery life limitations (cordless).
- Voltage: Cordless models range from 12V to 20V or higher.
- High Torque Impact Wrenches: Designed for extremely demanding applications, such as heavy machinery repair or large bolt tightening.
- Stubby Impact Wrenches: Compact design for tight spaces.
- Digital Impact Wrenches: Feature electronic controls for precise torque settings and data logging.
Based on the provided information, “nut gun” can be classified under the following HS codes:
-
8467290040: Tools for working in the hand, pneumatic, hydraulic or with self-contained electric or nonelectric motor, and parts thereof: With self-contained electric motor: Other Screwdrivers, nut-runners and impact wrenches.
- 84: Chapter 84 covers machinery and mechanical appliances; parts thereof.
- 67: Heading 67 specifically covers tools for working in the hand, pneumatic, hydraulic or with self-contained electric or nonelectric motor.
- 290040: This subheading further specifies “Other Screwdrivers, nut-runners and impact wrenches” with self-contained electric motor.
- Tax Details: Basic tariff: 0.0%, Additional tariff: 7.5%, Additional tariff after 2025.4.2: 30.0%. Total tariff: 37.5%.
-
8467290040: Tools for working in the hand, pneumatic, hydraulic or with self-contained electric or nonelectric motor, and parts thereof: With self-contained electric motor: Other Screwdrivers, nut-runners and impact wrenches.
- 84: Chapter 84 covers machinery and mechanical appliances; parts thereof.
- 67: Heading 67 specifically covers tools for working in the hand, pneumatic, hydraulic or with self-contained electric or nonelectric motor.
- 290040: This subheading further specifies “Other Screwdrivers, nut-runners and impact wrenches” with self-contained electric motor.
- Tax Details: Basic tariff: 0.0%, Additional tariff: 7.5%, Additional tariff after 2025.4.2: 30.0%. Total tariff: 37.5%.
Important Note: According to the provided reference material, the tariff for HS code 8467290040 will change after April 2, 2025, with the additional tariff increasing from 7.5% to 30.0%, resulting in a total tariff of 37.5%.