Harvey Tool 41450-C4 | 1/4 Thread 0.1800" Diameter 4FL 60 Degree Incuded Angle Amorphous Diamond Coated Carbide Single Profile Thread MillFeatures Single thread form can mill any pitch Cuts internal and external 60 Degree UN threads Mills right hand and left hand threads Tip of included angle ground to a point Solid carbide CNC ground in the USA Product Specifications Size 1 4 Milling Diameter (Decimal Inch) 0. 1800" Max Depth of Thread (Inch) 3 4" Max Depth of Thread (Decimal Inch) 0. 7500" Number of Flutes 4 Finish Coating Amorphous Diamond Included Angle 60 Degree Shank Diameter