Red Seal Industrial Mechanic (Millwright) Practice Exam

What is a torque specification?

1. The weight of the materials used

2. The maximum allowable temperature of components

3. The prescribed amount of twisting force to be applied to a fastener

4. The time duration an engine should run

The correct answer is: The prescribed amount of twisting force to be applied to a fastener

A torque specification refers to the prescribed amount of twisting force that should be applied to a fastener, such as a bolt or nut, to ensure proper assembly and function of components. When a mechanical assembly is put together, it is critical to apply the correct amount of torque because too little torque could lead to insufficient clamping force, potentially resulting in loosening or failure of the assembly during operation. Conversely, applying too much torque can cause damage to the fastener or the materials being joined, leading to stripping threads or even breaking the fastener. Understanding torque specifications is vital in millwrighting and mechanical maintenance, where precision is crucial for safety and equipment reliability. This specification ensures that all components are securely fastened without compromising material integrity. In practice, torque specifications are usually provided by manufacturers and can differ depending on the size, material, and type of fastener being used. The other choices do not pertain to the concept of torque specifications. They focus on distinct aspects unrelated to the torque applied to fasteners.