Description
The Irwin 9/32″ Carded Cobalt 135 Degree Jobber Drill Bit (3016018) is a specialized cutting tool designed for exceptional performance in hard and abrasive materials. Constructed from a cobalt-enhanced high-speed steel, this drill bit is formulated to withstand the high heat and friction generated when drilling tough metals like stainless steel, cast iron, and titanium. The 135-degree split point tip is a standout feature, enabling the bit to start drilling on contact without walking, which is a common problem with conventional drill bits. This design not only improves accuracy but also reduces the amount of force required from the user. As a result, it is the ideal choice for professionals and enthusiasts who demand precision and reliability in their metalworking tasks. The jobber length provides a balanced combination of reach and rigidity, making it a versatile addition to any toolbox. This drill bit is engineered for those tough jobs where standard high-speed steel bits would fail, ensuring that you can complete your projects with efficiency and confidence.
KEY FEATURES AND BENEFITS:
- Exceptional Heat Resistance: Cobalt alloy composition increases the bit’s ability to withstand high temperatures, extending tool life and maintaining sharpness.
- Precise, Walk-Free Starts: 135-degree split point tip allows drilling on contact without walking, eliminating the need for a center punch.
- Superior Material Penetration: Efficiently drills through tough metals such as stainless steel, hardened alloys, and cast iron.
- Increased Tool Life: Durable design and cobalt material maintain a sharp cutting edge longer, reducing replacements.
- Improved User Efficiency: Requires less feed pressure, reducing fatigue and improving control during drilling.
SPECIFICATIONS:
- Model: 3016018
- Drill Bit Diameter: 9/32″
- Point Angle: 135 Degrees
- Material: Cobalt High-Speed Steel
- Finish: Gold Oxide
- Shank Type: Straight
- Overall Length: 4-1/4″
- Flute Length: 2-15/16″
HOW TO USE:
- Safety First: Always wear appropriate PPE, such as safety glasses and gloves, before drilling.
- Secure the Workpiece: Clamp the material firmly to a workbench or vice to prevent movement.
- Install the Bit: Insert the drill bit’s shank into your drill chuck and tighten securely.
- Select the Right Speed: Use low to medium drill speeds to avoid overheating, especially with hard metals.
- Begin Drilling: Place the bit tip on the drilling point and apply steady pressure; the split point prevents walking.
- Use Cutting Fluid: Apply lubricant to reduce heat and extend bit life during drilling.
- Clear Chips: Periodically remove the bit to clear debris and prevent clogging.
BENEFITS OF USING IRWIN 9/32″ CARDED COBALT 135 DEGREE JOBBER DRILL BIT (3016018):
- Offers superior heat and abrasion resistance, ideal for drilling hard metals.
- Ensures clean, precise starts without the need for a center punch.
- Delivers long-lasting sharpness, reducing tool replacements and downtime.
- Designed to perform reliably in demanding industrial and metalworking applications.
FEATURES:
- Made from industrial-grade cobalt alloy steel for enhanced heat tolerance.
- 135-degree split point geometry for accurate, walk-free starts.
- Jobber length balances reach with rigidity for versatile use.
- Heavy-duty web construction increases strength and minimizes breakage.
- Gold oxide finish resists rust and corrosion.
- Engineered to excel in tough materials like stainless steel and tool steel.
- Straight shank fits standard drill chucks.






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