RS PRO Breaking Torque Wrench 0.4 to 4 Nm 1/4 in Square Drive 105mm Plastic Handle 663-881

The RS PRO 663-881 Breaking Torque Wrench is an advanced precision tool designed for applications that require highly accurate low torque adjustment. With an adjustable torque range from 0.4 to 4 Nm, this wrench is ideally suited for mechanical, electronic, and laboratory assembly operations where over-tightening must be avoided.

One of the primary features of this torque wrench is its breaking mechanism, which 'breaks' at the preset torque value - providing both an audible and tactile signal to the user. This function helps ensure that fasteners are neither under- nor over-tightened, preserving the integrity of components and avoiding damage to sensitive assemblies. The wrench is bidirectional and can be used for both clockwise and anti-clockwise tightening, further expanding its range of applications.

The tool's compact form factor, measuring just 105 mm in overall length, is ideal for use in restricted or confined spaces, such as inside electronic enclosures, automotive assemblies, or laboratory equipment. Its lightweight plastic handle affords both durability and comfort for operators working over extended periods or performing repetitive tasks.

Torque can be accurately adjusted using a hex key, which operates the internal adjustment mechanism. This adjustment should be performed with a compatible torque analyzer to guarantee calibration integrity. The ±6% accuracy rating of this tool means it meets stringent requirements for precision in production environments and quality assurance processes.

The RS PRO 663-881 is constructed to high industry standards and conforms with both ISO and EN requirements. This makes it a reliable choice for engineers, technicians, and assembly professionals who need repeatable and traceable torque application for safety-critical and precision engineering tasks.

This torque wrench is ideal for use in electronics assembly, laboratory instrument setup, light mechanical assembly lines, medical device production, and industrial maintenance where controlled torque is crucial for the longevity and safety of fastened joints. It is also commonly used in quality control scenarios to verify the correct fixing torque.

Proper tool care is essential - store the wrench in its box when not in use, and recalibrate it with a torque analyzer at least annually to maintain accuracy. Regular calibration ensures consistent performance and extends the tool’s service life.

Browse more precision Torque Wrenches and hand tools under the RS PRO brand and the broader selection in the Industrial Tools & Equipment category on EnvMart.