1.1 This specification covers the chemical and mechanical requirements of three grades of carbon steel bolts and studs in sizes ¼ in. through 4 in. The fasteners are designated by “Grade“ denoting tensile strength and intended use, as follows:
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ASTM A307-10
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Standard Specification for Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength
ASTM International , 10/01/2010