ZIW340FA 3/8″ Drive Dual-flex Angle Air Impact Wrench
The ZIW340FA 3/8 inch Drive Dual Flex Angle Air Impact Wrench is a compact right-angle pneumatic impact tool engineered for precision fastening in confined and hard-to-reach spaces. Featuring a dual-flex-angle head design, this wrench provides enhanced maneuverability and flexibility, making it ideal for applications where standard straight impact tools cannot operate effectively. Built with a durable pneumatic impact mechanism, the ZIW340FA delivers stable torque output in a compact body. Its lightweight construction, balanced handling, and angled head configuration allow technicians to work efficiently in engine bays, machinery compartments, and structural assemblies requiring controlled access.
Key Features
3/8 inch square drive for precision and medium-duty fastening
Dual flex angle head for improved positioning flexibility
Right-angle configuration for tight workspace accessibility
Strong and stable pneumatic impact mechanism
Compact and lightweight design
Ergonomic grip enhances comfort and control
Variable speed trigger for accurate fastening adjustment
Forward and reverse control with convenient switching
Durable gear housing and impact components
Designed for professional automotive and industrial use
Applications
The ZIW340FA Dual Flex Angle Air Impact Wrench is suitable for
Automotive engine and suspension repair
Motorcycle and light vehicle maintenance
Equipment servicing in confined compartments
Assembly line precision fastening
Industrial machinery maintenance
Structural installations in restricted areas
Performance Advantages
Flexible Access Capability
Dual flex angle head allows positioning in narrow or obstructed bolt locations
Compact Power Delivery
Provides reliable torque in a smaller, more maneuverable tool body
Improved Control
Variable speed trigger enhances fastening precision
Operator Comfort
Lightweight and balanced construction reduces fatigue
Industrial Durability
Robust internal mechanism supports long-term professional use
Enhanced Productivity
Efficient fastening speeds improve workflow and service efficiency
Technical Highlights
Tool Type
Right-angle pneumatic impact wrenchDrive Size
3/8 inch square driveHead Design
Dual flex angle configurationDrive Mechanism
Air-powered impact systemOperation Mode
Trigger-controlled forward and reverseConstruction
Industrial-grade housing with reinforced gearsPneumatic Efficiency
Optimized airflow for consistent torque performanceMaintenance
Durable design with minimal service requirements
Why Choose ZIW340FA
The ZIW340FA 3/8-inch Drive Dual Flex Angle Air Impact Wrench is designed for professionals who require maximum accessibility, precise torque control, and dependable performance in restricted work environments. Its dual-flex-angle head allows technicians to reach difficult fasteners while maintaining stable torque delivery. Ideal for automotive technicians, maintenance professionals, and assembly operators, the ZIW340FA delivers compact versatility, efficient fastening performance, and long-term durability for demanding applications.
Features & Benefits
- Revolutionary patented DAI Double Air Intake motor system. Innovative design increases airflow, delivering high torque in an absolutely compact machine.
- One-handed switch for 2 speeds forward, 1 speed reverse.
- The shortest length for better access in tight areas.
- Ergonomics comfort handle with a well-balanced design for user-friendliness.
- Viton oil seal to prevent oil leakage under high-performance and high-temperature conditions.
- The front and end rotor plate inserts a thin steel plate to prevent wear and maintain high performance.
- Cold resistance against -25°C for composite motor housing.
- Complex processing and special rotor blade material provide wear resistance & very long life.

Features:
- Double Air Intake motor
- Twin hammer mechanism (Low vibration)
- Working torque: 400 ft-lbs
- Nut Busting torque: 963 ft-lbs (14.58 sec.)
- Sound pressure level: 90.1 dB(A) Lp A
- Vibration acceleration: 4.89 m/s²
- Bolt Capacity: 1/2″ (13 mm)
Specification:
- Square Drive: 3/8(10) inch(mm)
- Free Speed: 8500 rpm
- Max. Torque: 400(542) ft-lb(Nm)
- Avg. Air Cons.: 4(113) cfm(l/min)
- Overall Length: 3.46(88) inch(mm)
- Net Weight: 3.06(1.39) lbs(kgs)
- Air Inlet Size: 1/4 inch-NPT/PT
- Impact mechanism: Twin Hammer
- Operating Air Pressure: 90(6.2) psi(bar)
- Min. Hose Size: 3/8(10) inch(mm)
| Model | Square Drive inch(mm) | Free Speed rpm | Max. Torque ft-lb(Nm) | Avg. Air Cons. cfm(l/min) | Overall Length inch(mm) | Net Weight lbs(kgs) | Air Inlet Size inch-NPT/PT | Impact mechanism |
| ZIW1010C | 1/2(12.7) | 10000 | 500(680) | 4.7(133) | 4.8(122) | 2.87(1.3) | 1/4 | Twin Hammer |
| ZIW1020C | 1/2(12.7) | 8300 | 1000(1350) | 5.2(147) | 5.9(150) | 3.53(1.6) | 1/4 | Twin Hammer |
| ZIW340FA | 3/8(10) | 8500 | 400(542) | 4(113) | 3.46(88) | 3.06(1.39) | 1/4 | Twin Hammer |
| ZIW410FA | 1/2(12.7) | 8000 | 370(500) | 4(113) | 3.35(85) | 2.87(1.3) | 1/4 | Twin Hammer |
| ZIW337P | 3/8(10) | 8000 | 369(500) | 4(113) | 3.35(85) | 2.43(1.1) | 1/4 | Twin Hammer |
| ZIW437P | 1/2(12.7) | 8000 | 369(500) | 4(113) | 3.35(85) | 2.43(1.1) | 1/4 | Twin Hammer |




