These have high torque capacities with high tensile strength ranging above 500MPa. For standard coarse pitch thread and fine pitch thread bolts the nominal stress area As is provided in ISO 898-1 Tables 4 to 7. Eurocode
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BS449: Part 2 Bolt Grade 6.8, Loading Capacities of Ordinary Bolts per. Fastener Bolt Thread Stress Tensile Area Table Chart for ANSI Inch Size . Bolt Grade Markings & Strength Chart - Metric Steel Bolts, Tensile Strength:The resistance of a material to breaking under tension, Yield Strength: The stress at which a specific amount of deformation is produced.