Unequal Spacing / Variable Lead Flute
For reduced vibration
Right-Hand Cut & Left-Hand Helix Geometry
Increases tool stability
EgiAs Coating
For exceptional wear resistance
Ultra-Fine Grain Carbide
For high wear resistance and toughness
More Products
A Brand AT-1 NPT
A Brand AT-1 NPTF
A Brand AT-1 NPS
The AT-1 is designed with a left-hand helix and starts cutting from the skank side, reducing deflection, preventing bending, thus allowing for 1-pass cutting and reducing overall cutting time.
Cutting Data
Achieves high speed and stable machining in 4140 (30HRC).
The AT-1 thread mill is designed with a left-hand helix for a small pitch diameter difference between the hole entry and the bottom of the hole, allowing a delay in gauge-out failure. Longer tool life can be achieved with elimination of “zero cutting” for correcting bending.
When processing the same number of thread holes, the AT-1 completed the job in less than half the time of the conventional tool.
