If no adapter is used (E equals 0) with an 8-inch wrench and a target torque of 35 in-lbs, what should the wrench be set to?

If no adapter is used (E equals 0) with an 8-inch wrench and a target torque of 35 in-lbs, what should the wrench be set to?

• A. 32 in-lbs
• B. 35 in-lbs
• C. 28 in-lbs
• D. 40 in-lbs

Answer: (B)

With no adapter (E = 0), the torque you apply at the fastener is determined directly by the wrench’s own length. An 8-inch lever means the torque at the fastener equals the wrench setting. So to reach a target of 35 in-lbs, you set the wrench to 35 in-lbs. If you had an adapter or extension, the effective lever arm would change and you’d need to adjust the setting to compensate, but in this case there is no extension, so the setting should be the target torque: 35 in-lbs.

With no adapter (E = 0), the torque you apply at the fastener is determined directly by the wrench’s own length. An 8-inch lever means the torque at the fastener equals the wrench setting. So to reach a target of 35 in-lbs, you set the wrench to 35 in-lbs. If you had an adapter or extension, the effective lever arm would change and you’d need to adjust the setting to compensate, but in this case there is no extension, so the setting should be the target torque: 35 in-lbs.