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StructX > Design Tables > Bolt Design > Minimum Tensile Stress

Minimum Tensile Stress

With so many bolts available these days it is essential to understand the strengths and weaknesses different bolts have when compared to one another. The below table outlines some useful properties that are required for design purposes for some of the more commonly encountered bolt types. If there is any doubt about any of the properties, the manufacturer or supplier should be contacted. When substituting bolts, an engineer should be consulted.

What is Tensile Stress?

Tensile strength is a measurement of the force required to pull something to the point where it breaks. For bolts, the minimum tensile stress is the maximum amount of tensile stress that can be applied before failure, or fracture.

Metric Bolts - Minimum Tensile Stress
Nominal Size Pitch (mm) Stress Area (mm2) Class 4.6
(MPa)
Class 8.8
(MPa)
AS1252
(MPa)
Class 10.9
(MPa)