These nuts are used on collet holders and multi-spindle heads where center or shoulder distances are important.

Use ER High Speed mini nuts for applications where speed exceeds 10,000 RPM's. They are balanced to G2.5 for 20,000 RPM's. These nuts are used on collet holders and multi-spindle heads where center or shoulder distances are important.

These nuts use a special wrench to torque down the nut. Do not over tighten these nuts.