Torque Wrench – Complete Size, Brand & Specification Guide

A Torque Wrench is a precision hand tool designed to tighten nuts and bolts to a specified torque value. It helps prevent over-tightening, under-tightening, thread damage and component failure. Torque wrenches are widely used in automotive workshops, motorcycles, machinery maintenance, construction, industrial assembly and engineering applications.

Torque is commonly measured in Newton Meter (Nm), Foot-Pound (ft-lb), and Inch-Pound (in-lb).

Torque Wrench Available Sizes

*Torque ranges vary by manufacturer and model. For example, TOPTUL offers models from 1/4″ 6–30 Nm through 1″ 140–980 Nm.

Popular Torque Wrench Types

• Click Type Torque Wrench
• Digital Torque Wrench
• Electronic Torque Wrench
• Dial Type Torque Wrench
• Beam Type Torque Wrench
• Adjustable Torque Wrench
• Interchangeable Head Torque Wrench
• Industrial Heavy-Duty Torque Wrench
• Preset Torque Wrench

Popular Brands

Depending on availability, Torque Wrenches are available from brands such as:

• TOPTUL
• GEDORE
• KTC
• KOKEN
• KING TONY
• STANLEY
• Facom
• Bahco
• NORBAR
• Snap-on
• Proto
• Craftsman
• Milwaukee
• Tekton

Brand specifications, torque range and accuracy should always be checked against the individual model.

Key Specifications

• Tool Type: Torque Wrench
• Drive Sizes: 1/4″, 3/8″, 1/2″, 3/4″, 1″
• Torque Units: Nm / ft-lb / in-lb
• Mechanism: Click / Digital / Beam / Dial
• Drive Material: CR-V / CR-MO or manufacturer-specific alloy
• Direction: Clockwise; some models support clockwise and counter-clockwise operation
• Handle: Ergonomic anti-slip grip
• Adjustment: Adjustable torque setting
• Locking System: Push-to-lock / pull-to-unlock or model-specific system
• Accuracy: Model-dependent; professional models may specify ±3% or ±4% accuracy
• Socket Compatibility: Compatible with corresponding square-drive sockets
• Storage: Many models supplied with protective storage case
• Calibration: Calibration certificate available with selected professional models

TOPTUL, for example, specifies CR-V/CR-MO square drives, a push-to-lock/pull-to-unlock setting system, reverse lever and ±4% clockwise torque accuracy on its listed ANAF series.

Applications

Torque Wrenches are commonly used for:

• Automotive repair and maintenance
• Motorcycle servicing
• Car wheel and lug-nut tightening
• Engine assembly
• Bicycle maintenance
• Industrial machinery
• Construction equipment
• Heavy trucks
• Agricultural machinery
• Hydraulic equipment
• Pipeline and flange assembly
• Mechanical engineering
• General workshop maintenance

Why Use a Torque Wrench?

A torque wrench allows the operator to apply the manufacturer’s specified tightening torque instead of relying on guesswork. Correct torque can help maintain proper clamping force and reduce the risk of damaged threads, loose fasteners or excessive tightening.

For professional applications, the correct wrench should be selected according to the required torque range, fastener size, socket drive and manufacturer’s specification.

How to Choose the Right Torque Wrench

1/4″ Drive: Choose for small and precision fasteners.

3/8″ Drive: Suitable for general automotive, motorcycle and medium-duty applications.

1/2″ Drive: Commonly used for vehicle wheels, suspension, engine work and larger fasteners.

3/4″ Drive: Suitable for heavy trucks, construction equipment and industrial machinery.

1″ Drive: Designed for very high-torque industrial and heavy-equipment applications.

The drive size alone does not determine the exact torque capacity; always check the manufacturer’s specified torque range for the particular model.

Torque Wrench for Sale in Bangladesh

Dusk Technology BD supplies a wide range of Torque Wrenches and professional hand tools for workshops, industries, construction projects, mechanical maintenance and engineering applications.

For purchasing, select the required brand, drive size, torque range and type according to your application.

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