Rushmore USA 4 Flute Variable Helix Solid Carbide nACo Coated Single End Mill, 5/16″ Size Shank Diameter, 1/2″ Length of Cut, .020″ Radius, 2″ Overall Length

• Increased metal removal in less machining time
• Front to back helix increase for high shearing action in multiple materials.
• Chatter free machining with exceptional harmonics.
• Increased feed and speed rates with exceptional wear ability.
• For chatterless machinging of ferrous materials in slotting, profiling, or pocketing operations
• There are several styles or designs for this tool that are sufficient in many different materials.
• Design has the broadest range and performs the best in a majority of materials.
• The helix changes along the flutes which give the mill increased stability during the cutting action.
• Substantial increases in speeds can be achieved with this design which should produce more parts faster with equal to better wear ability.
• Small corner radius for added strength to the corners and a smoother overall cutting action.
• Coating: nACo
• Center Cutting
• Cutting Direction: Right Hand
• Flute Shape: Spiral Flute
• Hardness: 92Rc
• Length Type: Standard Length
• Helix Angle: 30
• Tolerance_Cutting Diameter: +.000/-.002″
• Tolerance_Shank Diameter: +.0000″ / -.0003″
• Tooth Geometry: Variable Helix 4 Flute
• Workpiece Material Range: Steel, Stainless Steel, High-Temp Exotic Alloys, Non-Ferrous, Cast Iron, Hard Materials, Plastics
• Country of Origin: U.S.A.

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