| HS Code | Official Doc | Tariff Rate | Origin | Destination | Effective Date |
|---|---|---|---|---|---|
| 8467290040 | Doc | 37.5% | CN | US | 2025-05-12 |
| 8412809000 | Doc | 55.0% | CN | US | 2025-05-12 |
| 8412801000 | Doc | 55.0% | CN | US | 2025-05-12 |
| 8501402020 | Doc | 58.3% | CN | US | 2025-05-12 |
| 8501406020 | Doc | 58.7% | CN | US | 2025-05-12 |
| 8503009520 | Doc | 83.0% | CN | US | 2025-05-12 |
| 8543708000 | Doc | 55.0% | CN | US | 2025-05-12 |
| 8543906800 | Doc | 55.0% | CN | US | 2025-05-12 |
Electric Impact Wrench
An electric impact wrench is a power tool designed to deliver high-torque output with minimal effort from the user. It utilizes a rotating impact mechanism to deliver short, powerful bursts of rotational force, making it highly effective for tightening or loosening stubborn fasteners.
Material
Electric impact wrenches commonly incorporate the following materials:
- Housing: Typically constructed from high-strength polymers or aluminum alloys for durability and weight reduction.
- Motor: Features an electric motor, often brushless for increased efficiency and longevity.
- Impact Mechanism: Utilizes hardened steel components (hammers, anvil, gears) to withstand repeated high-stress impacts.
- Drive Shaft: Made of alloy steel for strength and torsional resistance.
- Battery (Cordless Models): Lithium-ion batteries are standard due to their high energy density and relatively low self-discharge rate.
- Anvil: Hardened alloy steel, available in various sizes and profiles.
Purpose
The primary purpose of an electric impact wrench is to efficiently tighten or loosen nuts, bolts, and other threaded fasteners, particularly those requiring significant torque. They are used in applications where manual wrenches would be insufficient or impractical.
Function
Electric impact wrenches function by:
- Motor Rotation: An electric motor spins a rotating mass.
- Impact Mechanism Engagement: A hammer and anvil system is engaged. As the motor spins, the hammer repeatedly strikes the anvil.
- Torque Delivery: Each impact delivers a rotational force to the drive shaft. The frequency and force of these impacts create high torque.
- Forward/Reverse Control: A switch allows the user to select forward or reverse rotation for tightening or loosening.
- Variable Speed Control: Many models offer variable speed triggers allowing for controlled application of force.
Usage Scenarios
- Automotive Repair: Removing lug nuts, suspension components, engine bolts, etc.
- Construction: Assembling and disassembling structural steel, tightening large bolts.
- Maintenance & Repair: Industrial machinery, heavy equipment.
- Tire Service: Rapid removal and installation of vehicle tires.
- Assembly Lines: Fastening components in manufacturing processes.
Common Types
- Corded Impact Wrenches: Powered by a direct AC power supply. Offer consistent power but lack portability.
- Cordless Impact Wrenches: Powered by rechargeable batteries. Provide portability and convenience. Variations exist based on battery voltage (e.g., 12V, 18V, 20V).
- Mid-Torque Impact Wrenches: Offer a balance between power and control, suitable for automotive work and general maintenance. (Typically 200-500 ft-lbs torque)
- High-Torque Impact Wrenches: Designed for heavy-duty applications requiring substantial torque. (Typically 700+ ft-lbs torque)
- Extended Reach Impact Wrenches: Feature a longer anvil for accessing fasteners in confined spaces.
- Digital Impact Wrenches: Incorporate electronic controls for precise torque settings and data logging.
- Stubby Impact Wrenches: Compact design for tight spaces.
Electric impact wrenches fall under tools powered by electricity and designed for tightening or loosening fasteners. Here are relevant HS codes based on the provided information:
- 8467290040: This HS code covers “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”. This is a direct match for electric impact wrenches.
- 84: Chapter – Tools, implements, cutlery, hand tools and articles thereof.
- 67: Heading – Tools for working in the hand, pneumatic, hydraulic or with self-contained electric or nonelectric motor.
- 29: Subheading – Other Screwdrivers, nut-runners and impact wrenches.
- 0040: Further specification – Details the specific item.
- Total Tax Rate: 37.5% (Base Tariff: 0.0%, Additional Tariff: 7.5%, Post-April 2, 2025 Additional Tariff: 30.0%).
Regarding HS code 8467290040, please note the additional tariff changes taking effect after April 2, 2025, increasing the total tax rate to 30.0%.