Alpha Spiral Flute 4-12mm Step Drill - 9STSFM4-12S
The Alpha 9STSFM4-12S Spiral Flute Step Drill is a versatile fabrication tool designed to streamline your hole-drilling process. Capable of creating nine distinct hole sizes with a single bit, it eliminates the need to constantly change drill bits or carry a bulky index set. The spiral flute geometry offers a significant advantage over standard straight flutes, providing smoother cutting action, reduced vibration, and superior chip evacuation, resulting in a cleaner, more precise finish on sheet steel, non-ferrous metals, and plastics.
Features:
Spiral Flute Design: The twisted flute geometry ejects chips more efficiently than straight flutes, reducing cutting resistance and vibration for a smoother, quieter drilling experience.
Titanium Nitride (TiN) Coating: Coated with a hard ceramic TiN layer that significantly reduces surface friction and heat buildup, extending the lifespan of the cutting edge and allowing for faster drilling speeds.
Drills & Deburrs: Designed to perform two processes in one operation; as the bit advances to the next step, it automatically deburrs the top edge of the previous hole, leaving a safe, clean finish without manual cleanup.
3-Flat Shank: Features three ground flats on the shank that lock securely into the drill chuck jaws, ensuring maximum torque transmission and preventing the bit from spinning under load.
Self-Starting Split Point: The precision split point bites into the material immediately, eliminating the need for a pilot hole and preventing the bit from wandering across the workpiece.
Specifications:
Part Number: 9STSFM4-12S
Range: 4mm - 12mm
Material: Premium M2 HSS
Coating: Titanium Nitride (TiN)
Shank: 6.0mm (3-Flat)
Steps: 9 Steps
Step Sizes:
4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm
Important: The use of quality cutting fluid is mandatory when using this step drill to prevent heat buildup and maximize tool life.