If the torque value for nuts is not given, where can recommended torque values be found?

If the torque value for nuts is not given, where can recommended torque values be found?

• A. AC 43.13-1B
• B. MIL-HDBK-5
• C. FAA-23
• D. ASME B18

Answer: (A)

When you need a torque value and it isn’t given on the fastener or in the task sheet, consult a reference that provides practical torque tables linked to bolt size, lubrication, and material. In aviation maintenance, the go-to source for these values is AC 43.13-1B. It offers recommended torque numbers and procedures for installing aircraft hardware, with tables you can use to select the right tightening value for different bolt sizes and lubricants. Other references cover different purposes—design data, fastener specifications, or airworthiness standards—and don’t provide the field-ready torque tables used for maintenance tasks.

When you need a torque value and it isn’t given on the fastener or in the task sheet, consult a reference that provides practical torque tables linked to bolt size, lubrication, and material. In aviation maintenance, the go-to source for these values is AC 43.13-1B. It offers recommended torque numbers and procedures for installing aircraft hardware, with tables you can use to select the right tightening value for different bolt sizes and lubricants. Other references cover different purposes—design data, fastener specifications, or airworthiness standards—and don’t provide the field-ready torque tables used for maintenance tasks.