DB420N-S Dial Gauge Torque Wrench, 40～420N.m

Tohnichi DB420N-S is a high-precision dial indicating torque wrench engineered for quality inspections, precise torque verification, and controlled tightening in demanding assembly environments such as heavy automotive manufacturing, industrial machinery installation, and structural maintenance. Delivering accurate measurements from 40 to 420 N·m via a 3/4" square drive, this manual tool features a movable dial for intuitive preset torque application, a memory pointer for peak torque capture, and length-independent accuracy to ensure reliable results regardless of grip position. Robust and ergonomic with a metal handle for enhanced durability, it supports bi-directional operation (clockwise and counterclockwise) for versatile use in tightening and loosening tasks, promoting operator efficiency and reducing the risk of over-torquing in high-force applications.

Key Performance Specifications

• Torque Range: 40 - 420 N·m (354 - 3,700 in-lbs)
• Graduation: 5 N·m
• Accuracy: ±3% of indicated value
• Drive Size: 3/4" Square (19.05 mm)
• Loading Direction: Bi-directional (CW and CCW)

Physical and Environmental Specifications

• Overall Length: 890 mm (35.0")
• Weight: 2.2 kg (4.85 lbs)
• Handle Diameter: Approximately 35 mm (ergonomic for high-torque control)
• Operating Temperature: 14°F to 104°F (-10°C to 40°C); suitable for standard workshop conditions
• Storage Conditions: Dry environment to prevent corrosion; calibration recommended annually

Key Features

• Movable Dial Face: Rotate to preset desired torque and tighten until pointer reaches "0" for effortless control and repeatability
• Memory Pointer: Follower hand captures maximum torque achieved, enabling easy post-operation verification without external tools
• Length-Independent Accuracy: Consistent performance irrespective of hand placement on the handle, ideal for varied operator techniques
• Durable Metal Handle: Provides robust grip and longevity in high-torque industrial settings (no full-surround protective cover on dial)
• Ergonomic Design: Balanced for high-force application, minimizing fatigue and enhancing control during demanding tasks
• Bi-Directional Versatility: Supports both tightening and loosening measurements, enhancing utility in inspection workflows
• Alloy Construction: Engineered for reduced operator strain during prolonged quality checks and field use
• Applications: Optimized for large fastener inspections in heavy machinery, construction, automotive chassis, and general industrial assembly; excels in torque auditing and compliance verification