Using a straight extension on a torque wrench requires a change in torque value applied.

Using a straight extension on a torque wrench requires a change in torque value applied.

• A. True
• B. False
• C. Not specified
• D. Only for certain torque values

Answer: (B)

Using a straight extension in line with the torque wrench does not require changing the torque setting. The wrench is calibrated to deliver the chosen torque at the fastener, and a straight inline extension simply lengthens the handle without changing the lever arm that the wrench’s mechanism uses to reach its set torque. The indicated torque at the handle translates to the same torque at the fastener. If the extension were at a different angle (for example, a crowfoot or other adapter at 90 degrees), the effective lever arm changes and you would adjust the setting to compensate.

Using a straight extension in line with the torque wrench does not require changing the torque setting. The wrench is calibrated to deliver the chosen torque at the fastener, and a straight inline extension simply lengthens the handle without changing the lever arm that the wrench’s mechanism uses to reach its set torque. The indicated torque at the handle translates to the same torque at the fastener. If the extension were at a different angle (for example, a crowfoot or other adapter at 90 degrees), the effective lever arm changes and you would adjust the setting to compensate.