What temperature range applies to Hooks?

• A. Between 0 degrees and 200 degrees Fahrenheit
• B. Between 400 degrees and -40 degrees Fahrenheit
• C. Between -40 degrees and 200 degrees Fahrenheit
• D. Between -100 degrees and 0 degrees Fahrenheit

Answer: (B)

Hooks have a temperature rating to ensure the steel retains its strength and toughness under load. The acceptable operating range is from -40°F to 400°F. Exposure outside these temperatures can make the metal brittle at very low temps or degrade hardness and strength at high temps, increasing the risk of deformation or failure. The option listing a range that spans -40°F to 400°F (written as “between 400 degrees and -40 degrees Fahrenheit”) matches this safe upper and lower limit. Other ranges omit one end or extend beyond the rated range, so they aren’t correct.