This is how you identify torque-to-yield bolts

This tool is used so you can see exactly how many degrees you are turning a torque to yield bolt

Bolt Length and Diameter

Thread Pitch is measured with a special gauge

The correct gauge will match the grooves of the bolt

This gauge has a the same thread pitch as the bolt

This gauge has a different thread pitch than the bolt

Same Pitch

Different Pitch

These gauges can measure the diameter, pitch and bolt length

Always use a NEW cotter pin

Use new fasteners in highly critical locations like this connecting rod

Inspect all self locking nuts Some lock nuts are distorted at the top to create an interference fit. These will wear out after being removed and installed several times