Q: We are in the planning process for a structure that must withstand 160 to 165 ksi of tensile strength. Do you have any suggestions on bolting material?

A: An ideal bolt for this application would be a 17-4PH bolt. 17-4PH is a material that is over 4 times greater than 316 stainless steel. It is available in several heat treatments that meet different levels of strength. A 17-4PH bolt heat treated to condition H1025 which provides 170-165kis in tensile strength.