Midas civil fastener7/30/2023 If a 1/2” long ¼-20 bolt is torqued to a pre-load of 2.4 kips holding two 1/4” steel plates together, how much more tensile force can you put on the joint?Ġ.45 kips? – No, it’s more complicated than that. ![]() The real answer is 2.66 kips!īut how is that possible? The answer lies in the physics of a bolted connection. ![]() Ok, I know, a bolt holds two or more things together, but how? Basic Principle of Bolted Connectionsįirst we need to look at what a bolt actually does. When you tighten a bolt, you are actually stretching it. Remember, a screw is a simple machine, and applying a torque to the bolt causes the bolt to tighten.
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