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Posts Tagged: TTY bolt

TTY bolts

What is a TTY bolt? TTY stands for torque-to-yield. All bolts stretch a certain amount as they’re torqued and then spring back a bit as they relax; kind of like a bungee cord. That’s just the nature of what happens when you apply torque to steel. A TTY bolt is designed to stretch by a certain amount and then spring back to provide a precise pre-determined amount of clamping force. The amount of stretch allowed is called yield zone and it requires following torque instructions to the letter. If you … Read More

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