Description
The KnKut 7/8″ Fractional SP 1/2″ Reduced Shank Drill Bit (KK12SP-7/8) is an advanced cutting tool engineered for precision and durability. Designed and manufactured in the USA, this drill bit combines innovative features to deliver exceptional performance across a variety of challenging materials. Its unique step point design allows for accurate starts without the need for a center punch, significantly reducing bit walking and ensuring clean, precise holes from the first contact.
KEY FEATURES AND BENEFITS:
- Accurate Hole Starting: Features a split tip point that enables precise drilling without a center punch, preventing the bit from “walking” on the workpiece surface.
- Extended Tool Life: The step drill design significantly reduces heat generation during drilling, which helps to preserve the cutting edge and prolong the lifespan of the drill bit.
- Enlarges Existing Holes Safely: Specifically designed to enlarge previously drilled holes without causing damage to the drill bit’s tip.
- Secure Chuck Grip: Equipped with 3-flats on the shank to prevent slippage in the drill chuck, ensuring stable and reliable operation.
- Versatile Material Application: Performs effectively on a wide range of materials including hard steel, brass, sheet metal, and acrylics, making it a versatile addition to any toolkit.
- USA Made Quality: Manufactured in the United States, ensuring high standards of quality control and material integrity from raw materials to the finished product.
SPECIFICATIONS:
- Drill Bit Diameter: 7/8″ Fractional
- Shank Diameter: 1/2″ Reduced
- Overall Length: Jobber Length
- Material: Molybdenum High-Speed Steel (HSS) with high Vanadium content, Salt Nitride Treated
- Point Type: Step Point with Split Tip
- Shank Features: 3-Flats
- MPN: KK12SP-7/8
HOW TO USE:
- Prepare Your Workpiece: Securely clamp the material you intend to drill to a stable surface to prevent movement during operation.
- Select Your Drill: Insert the 1/2″ reduced shank of the KnKut KK12SP-7/8 drill bit into your drill chuck. Tighten the chuck firmly around the three flats on the shank to ensure it’s securely held and won’t slip.
- Set Drill Speed: Choose an appropriate drill speed based on the material you are drilling. Slower speeds are generally recommended for harder materials to reduce heat and maintain control.
- Initiate Drilling: Position the drill bit directly over the desired drilling location. Apply steady, moderate pressure as you begin drilling. The split tip point will help the bit start accurately without needing a pilot hole or center punch.
- Maintain Pressure and Lubrication: Continue to apply consistent pressure. For optimal performance and to further reduce heat and friction, especially when drilling hard materials, apply a suitable cutting fluid or lubricant as you drill.
- Clear Chips: Periodically withdraw the drill bit slightly from the hole to clear chips, particularly when drilling deep holes. This prevents chip buildup, reduces heat, and improves cutting efficiency.
- Complete Hole: Continue drilling until the desired hole depth or through-hole is achieved. Once finished, slowly withdraw the drill bit from the workpiece.
BENEFITS OF USING KNKUT 7/8″ FRACTIONAL SP 1/2″ REDUCED SHANK DRILL BIT (KK12SP-7/8):
- Saves time by eliminating the need for pre-punching or pilot drilling.
- Minimizes operational downtime due to less frequent bit replacements.
- Offers greater flexibility by fitting into commonly available drill chucks.
- Reduces the risk of tool slippage during demanding applications.
- Provides consistent and clean results across various material types.
- Contributes to a safer drilling experience through enhanced stability.
- Represents a reliable, long-term investment in quality tooling.
FEATURES:
- Precision-ground edges ensure smooth and efficient material removal.
- Flute design optimized for improved chip ejection.
- High-speed steel with Molybdenum and Vanadium provides superior toughness.
- Salt nitride coating enhances hardness and resists wear.
- Maintains sharpness and performance over prolonged use.
- Built to withstand high-demand drilling tasks with consistent results.





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