Description
The Irwin 1″ x 6″ Silver & Deming Drill Bit (91164) is a heavy-duty, reduced-shank bit designed for efficient drilling of large holes. Constructed with high-quality M-7 high-speed steel and a durable black oxide finish, it ensures excellent strength, corrosion resistance, and heat resistance. Its 1/2″ three-flatted reduced shank allows secure gripping in standard 1/2″ chucks, providing precise and slip-free drilling performance across wood, metal, and plastic applications.
KEY FEATURES AND BENEFITS:
- Drill Large Holes with a Standard Chuck: The 1/2″ reduced shank allows you to use this 1″ diameter bit with any drill that has a 1/2″ chuck, expanding your drilling capabilities without needing specialized equipment.
- Superior Durability: Constructed from M-7 high-speed steel, the bit provides exceptional strength and resistance to heat and wear, ensuring a long service life even in demanding applications.
- Secure, Slip-Free Grip: The three-flatted shank design improves chuck grip and prevents the bit from slipping, which is especially beneficial when using keyless chucks or drilling through tough materials.
- Versatile Application: This bit is suitable for drilling a variety of materials, including wood, metal, and plastic, making it a highly versatile tool for any workshop.
- Corrosion Resistance: The black oxide finish provides a layer of protection against rust and corrosion, extending the bit’s lifespan and maintaining its cutting performance over time.
SPECIFICATIONS:
- Drill Diameter: 1 inch
- Overall Length: 6 inches
- Shank Diameter: 1/2 inch
- Point Angle: 118 degrees
- Shank Type: Three-Flatted Reduced Shank
- Material: M-7 High-Speed Steel (HSS)
- Finish: Black Oxide
- Cutting Direction: Right-Hand Cut (Clockwise)
HOW TO USE:
- Prepare the Drill: Ensure your drill is set to the correct speed for the material you are drilling. For harder materials like metal, use a lower speed.
- Secure the Bit: Insert the 1/2″ reduced shank into your drill’s chuck. Tighten the chuck firmly to ensure the three-flatted shank is gripped securely.
- Mark the Spot: Mark the exact location where you intend to drill. Use a center punch for metal to prevent the bit from walking.
- Start Drilling: Begin drilling at a slow speed, applying steady, even pressure. Allow the bit to cut the material; do not force it.
- Clean and Cool: Regularly remove the bit from the hole to clear chips and debris. Use a cutting fluid or lubricant, especially when drilling metal, to reduce heat and friction.
- Finish the Hole: Continue drilling until you have passed through the material. Remove the bit and turn off the drill.
BENEFITS OF USING IRWIN 1″ X 6″ SILVER & DEMING DRILL BIT (91164):
- Allows a standard 1/2″ drill chuck to be used for drilling a larger 1″ hole.
- Reduces the need for a larger, more expensive drill press or heavy-duty drilling machine for certain tasks.
- The three-flat shank prevents the bit from spinning in the chuck, ensuring consistent torque and safer operation.
- The M-7 HSS material provides a long-lasting cutting edge that can withstand tough materials.
- The black oxide finish protects the bit from environmental elements and wear, extending its functional life.
FEATURES:
- 1″ diameter, ideal for creating large holes
- 6″ overall length for reaching deeper surfaces
- 1/2″ reduced shank fits most common drills
- Three-flatted shank design for superior grip
- Constructed from M-7 high-speed steel for durability
- Black oxide finish protects against rust
- 118-degree point angle suitable for general-purpose drilling
- Right-hand cutting direction for standard drilling applications
- Compatible with wood, metal, and plastic materials
- Model number 91164 for easy identification and reorder





Reviews
There are no reviews yet.