Which sequence best describes proper use of a torque wrench to achieve accurate tightening?

Which sequence best describes proper use of a torque wrench to achieve accurate tightening?

• A. Calibrate to the desired setting, apply steady force without impact, and re-check after torque is reached.
• B. Apply quick bursts of force, then continue until you hear a click.
• C. Use a wrench without calibration, and rely on feel to determine tightness.
• D. Re-check torque only after the component has cooled.

Answer: (A)

Using a torque wrench accurately comes down to setting the exact torque value, applying a steady, smooth force until the wrench indicates the target is reached, and then re-checking the joint to confirm the spec is still met after seating and any initial settling. Setting the wrench to the required value ensures you’re applying the precise load the fastener and joint are designed for. A steady, controlled pull avoids jerks or sudden bursts that can push past the target due to inertia, so you don’t over-tighten or miss the true torque. The re-check is essential because threads and joints often settle as they’re tightened, so the actual torque can shift slightly once everything is seated; verifying again confirms the fastener remains at the specified torque. Options that rely on quick bursts or on feel without calibration are unreliable because they let you overshoot or under-torque, and waiting to re-check only after cooling isn’t part of normal tightening practice, since temperature changes are not the primary reason you verify torque during assembly.

Using a torque wrench accurately comes down to setting the exact torque value, applying a steady, smooth force until the wrench indicates the target is reached, and then re-checking the joint to confirm the spec is still met after seating and any initial settling. Setting the wrench to the required value ensures you’re applying the precise load the fastener and joint are designed for. A steady, controlled pull avoids jerks or sudden bursts that can push past the target due to inertia, so you don’t over-tighten or miss the true torque. The re-check is essential because threads and joints often settle as they’re tightened, so the actual torque can shift slightly once everything is seated; verifying again confirms the fastener remains at the specified torque.

Options that rely on quick bursts or on feel without calibration are unreliable because they let you overshoot or under-torque, and waiting to re-check only after cooling isn’t part of normal tightening practice, since temperature changes are not the primary reason you verify torque during assembly.