ABSTRACT
This chapter examines the static strength of the body and threads of the fastener, starting with the tensile strength of the threaded portion of the body and considers tensile strength. The resistance of a bolt to stress corrosion cracking or hydrogen embrittlement can be inversely proportional to its conventional tensile strength. Tensile and stripping strengths are a measure of the resistance of the bolt to static or slowly changing loads. To compute the shear strength of the bolt people multiply the shear strength of the material by the total cross-sectional area of the shear planes, taking all of them into account. The fallacy, of course, lies in the suggestion that the tensile stress level within the fastener equals the proof stress at the proof load point, or the ultimate stress at the ultimate load point. A technique similar to that used for bolts is used for specifying the static strength of nuts.
