Description
The KnKut 9/16 Fractional Step Point 1/2″ Shank Drill Bit (KK12SP-9/16) is a high-performance tool engineered for precision and efficiency in drilling a variety of materials, especially challenging metals. Made in the USA from premium Hi-Molybdenum tool steel, this drill bit features a unique fractional step point design that revolutionizes the drilling process. This innovative geometry allows for precise hole starting without the need for a pilot hole or center punch, effectively eliminating bit “walking” and ensuring clean, round, and accurate holes every time.
KEY FEATURES AND BENEFITS:
- Fractional Step Point Design: Enables accurate starts without a center punch or pilot hole, eliminating bit “walking” and ensuring precise hole placement. This design also helps to reduce drilling heat, preserving the bit’s edge and extending its operational life.
- Reduced Shank with 3-Flats: The 1/2-inch reduced shank, common for larger drill bit sizes, incorporates three precision-ground flats. This feature ensures a very secure grip in the drill chuck, preventing slippage and improving power transfer during drilling.
- Premium Hi-Molybdenum Tool Steel: Constructed from high-quality Hi-Molybdenum High-Speed Steel (HSS) with a unique Nitro-Carbonized surface treatment. This specialized material and treatment provide exceptional hardness and resistance to high drilling temperatures, allowing the bit to remain sharp and effective in demanding applications.
- Precision Ground: Every aspect of the drill bit, including its point, flutes, body clearance, and overall diameter, is precision ground to exact tolerances. This meticulous manufacturing ensures ultimate accuracy, smooth chip evacuation, and consistent performance across various materials.
- Versatile Material Compatibility: Highly effective for drilling a wide range of materials, including hard steel, work-hardened grades of stainless steel, titanium alloy, brass, sheet metal, and acrylics, making it a versatile addition to any toolkit.
SPECIFICATIONS:
- Part Number: KK12SP-9/16
- Drill Bit Size: 9/16″
- Shank Size: 1/2″ Reduced Shank
- Material: Hi-Molybdenum Tool Steel (HSS)
- Manufacturing Origin: Made in USA
- Included in Product: 1 KnKut 9/16 Fractional Step Point 1/2″ Shank Drill Bit
HOW TO USE:
- Preparation: Always wear appropriate safety gear, including safety glasses, before starting any drilling operation. Secure your workpiece firmly to prevent movement during drilling.
- Mounting the Bit: Insert the 1/2″ shank of the KnKut KK12SP-9/16 drill bit into your drill chuck. Ensure the three flats on the shank are properly aligned within the chuck jaws for a secure, non-slip fit. Tighten the chuck firmly.
- Positioning: Position the step point of the drill bit precisely where you intend to drill the hole. Due to its unique design, no center punch or pilot hole is required, as the bit will start accurately without walking.
- Drilling: Apply steady, consistent pressure and begin drilling at a suitable speed for the material. For harder metals, use a slower speed to prevent overheating and prolong bit life. Allow the step point to engage and create a clean starting hole before increasing pressure for full material penetration.
- Cooling (Optional): When drilling very hard or thick materials, consider using a cutting fluid or lubricant to further reduce heat and improve cutting efficiency.
- Clearing Chips: The precision-ground flutes are designed for efficient chip evacuation. If chips accumulate excessively, briefly retract the bit to clear them, then resume drilling.
- Completion: Continue drilling until the desired depth or through-hole is achieved. Once the hole is complete, carefully withdraw the drill bit from the workpiece.
BENEFITS OF USING KNKUT 9/16 FRACTIONAL STEP POINT 1/2″ SHANK DRILL BIT (KK12SP-9/16):
- Creates clean, perfectly round holes in various materials.
- Significantly extends drill bit life by reducing heat generation during use.
- Eliminates the need for pre-drilling pilot holes or using a center punch.
- Provides exceptional stability and prevents bit wandering or “walking” at the start.
- Maintains sharpness longer, even when drilling tough or abrasive materials.
- Offers a consistently high level of drilling accuracy and precision.
- Handles drilling and enlarging existing holes without compromising performance.
FEATURES:
- Split-tip step point geometry for immediate and precise material engagement.
- Three-flat reduced shank design ensures maximum grip and prevents chuck slippage.
- Constructed from premium, high-vanadium content HSS tool steel.
- Features a surface-penetrating salt nitride treatment for enhanced wear resistance.
- Self-centering capability for superior hole location.
- Optimal flute geometry for efficient chip removal and reduced friction.
- Maintains structural integrity at elevated drilling temperatures.
- Manufactured with strict quality control from raw materials to final product.





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