How is Eturnal Screw different?

Indexable insert clamping screw is probably the only application in the world where a screw is repeatedly, sometimes even several times daily, tightened and opened. Screws on the market wear out where the screw driver meets the drive, within just a few uses leading to

- Frequent screw replacements

- Seized screws in the cutters leading to tool downtime

Increasing the hardness of the entire screw to reduce the above wear-out effect will result in  the screw damaging the tool holder threads. 

Eturnal screws feature a revolutionary design of dual hardness combined with ultra high strength to address these issues faced in the industry.

Eturnal screw is the first and the only screw for insert clamping that has a head made of very high hardness steel, that can take repeated screw driver turns without wearing out easily, which ensures extraordinary screw life.

The body of the screw however is designed relatively softer as compared to the head to safeguard the tool holder threads. 

Eturnal screw is made of a material that has 40% higher yield and tensile strengths  as compared to a conventional insert screw to endure the extreme forces acting on it during indexable cutting.