OSG Adds New Lineup for Rc and NPT Tapered Pipe Threads to Its AT-2 Thread Mill Series for High-Hardness Steel Applications

TOYOKAWA―April 1, 2021―OSG Corporation today announced the expansion of its AT-2 carbide thread mill series for high-hardness steels with a new lineup engineered for thread milling Rc and NPT tapered pipe threads. Six new items for Rc and six new items for NPT have been added.

OSG’s AT-2 carbide thread mill is developed to combine the drilling of a pilot hole and threading into a single procedure even in difficult-to-machine materials such as high-hardness steel. The AT-2 features a unique high strength cutting edge shape to control the bending of tool. It is engineered with a left-hand cut configuration for climb milling to prolong tool life by reducing tool deflection and the generation of heat. Roughing teeth are also added to distribute tool load. Furthermore, the AT-2 is coated with OSG’s original DUROREY coating to suppress chipping in high-hardness steel applications.

With the AT-2, sudden tool breakage caused by poor chip evacuation is eliminated, enabling operators to work at ease. By combining drilling and threading into a single procedure, processing efficiency is enhanced while tooling cost is also reduced. The AT-2 is suitable for a wide range of materials, such as high-hardness steel, stainless steel, non-ferrous metal and heat-resistant alloy.

For more information on the AT-2 carbide thread mill series