Irwin 3-1/2″ Carded Cobalt 135 Degree Jobber Drill Bit (3016012)

Description

The Irwin 3-1/2″ Carded Cobalt 135 Degree Jobber Drill Bit (3016012) is a high-performance cutting tool engineered for demanding metal drilling applications. Constructed from heat- and abrasion-resistant cobalt-alloy high-speed steel, this bit retains its sharpness and structural integrity longer even when cutting through hardened steel, stainless steel, and other abrasive alloys. Its durability and efficiency make it an essential tool for both professional job sites and personal projects.

KEY FEATURES AND BENEFITS:

• Cobalt-Enhanced Construction: High-speed steel fortified with cobalt alloy significantly improves heat and abrasion resistance, extending the cutting life of the bit under punishing conditions.
• 135° Split-Point Tip: Engages instantly without wandering, enhancing starting accuracy and eliminating the need for center punching or pilot holes.
• Straight Shank: Provides universal compatibility with standard drill chucks and ensures a secure fit.

SPECIFICATIONS:

• Product ID: 3016012
• Diameter: 3/16″
• Overall Length: 3-1/2″
• Point Angle: 135°
• Shank Type: Straight

HOW TO USE:

1. Preparation: Ensure your drill is properly powered and select an appropriate speed—lower speeds are preferred for hard metals to prevent overheating.
2. Secure the Bit: Insert the straight shank into the drill chuck and tighten firmly to prevent slipping during drilling.
3. Position the Workpiece: Clamp your material using a vise or C-clamps to maintain stability—this ensures safety and drilling precision.
4. Start Drilling: Place the bit at the marked point and apply steady pressure; the 135° split-point tip will immediately engage without walking.
5. Maintain Speed and Pressure: Continue applying firm, even pressure and use a cutting fluid or lubricant to cool both bit and workpiece for extended life.
6. Withdraw the Bit: Once drilling is complete, remove the bit while the drill is still running to help clear chips from the hole.

BENEFITS OF USING IRWIN 3-1/2″ CARDED COBALT 135 DEGREE JOBBER DRILL BIT (3016012):

• Extended tool life thanks to durable cobalt alloy construction—minimizing frequent replacements.
• Better accuracy with immediate, steady engagement from the split-point tip for clean, precise holes.
• Reduced effort—split-point design requires less force to start holes, making projects easier and more efficient.
• Versatile performance across multiple hard materials, making it a go-to tool for tough drilling jobs.

FEATURES:

• High-speed steel enhanced with cobalt alloy ensures superior durability.
• 135° split-point shape mitigates pilot-hole needs and prevents bit walking.
• Heavy-duty web construction delivers added strength and stability during use.
• Carded packaging for convenient storage, protection, and easy identification.
• Specialized for drilling hardened steel and other challenging metal materials.