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. If they’re not over-tightened, they’ll return to their original shape when loosened; kind of like a bungee cord. That stretch and return to normal is referred to as the bolt’s elasticity. What is bolt’s yield point? If a bolt is tightened past its point of elasticity, it will not return to its original shape when loosened. This is called the bolt’s “yield point.” When you tighten a threaded fastener, it can go … Read More