Description
The Irwin 1/2″ x 6″ Cobalt HSS 135 Degree Drill Bit (63132) is a high-performance tool crafted for professionals who regularly work with tough, abrasive metals. This jobber-length bit combines a specialized material composition with a precise tip geometry to deliver clean, accurate holes in materials that would quickly dull a standard drill bit. The M-35 cobalt alloy is a key component, providing superior resistance to the extreme heat and friction generated when drilling through materials like stainless steel and titanium.
KEY FEATURES AND BENEFITS:
- M-35 Cobalt Alloy Construction: This high-speed steel alloy contains 5-8% cobalt, providing excellent resistance to heat and abrasion. This extends the bit’s life when used on tough materials like hardened steel and stainless steel.
- 135° Split Point Tip: The self-centering design allows the bit to start drilling on contact with less force, preventing “walking” and eliminating the need for a pilot hole.
- Heavy-Duty Spiral Flute: Engineered for fast chip ejection, this design keeps the cutting edge clear of debris, reducing heat buildup and maintaining drilling efficiency.
- Gold Oxide Finish: This finish reduces friction between the bit and the workpiece, further decreasing heat and extending the bit’s operational life.
- Jobber Length: The balanced 6″ overall length provides a good combination of reach and stability for a variety of drilling tasks.
SPECIFICATIONS:
- Model Number: 63132
- Drill Bit Size: 1/2″
- Overall Length: 6″
- Flute Length: 4-1/2″
- Shank Style: Straight shank
- Point Angle: 135°
- Material: M-35 Cobalt HSS
- Cutting Direction: Right-hand
- Finish: Gold oxide
HOW TO USE:
- Preparation: Always wear appropriate safety gear, including safety glasses. Secure the material you are drilling into to prevent it from moving. Mark the exact spot where you want to drill.
- Chuck the Bit: Insert the 1/2″ shank of the drill bit into the chuck of your drill. Tighten the chuck securely to ensure the bit is centered and will not slip during operation.
- Set Your Speed: For tough metals, use a lower drill speed. High speeds can generate excessive heat, which can damage the bit and the material.
- Start Drilling: Place the tip of the bit on your mark. Apply steady, firm pressure to begin drilling. The 135° split point will self-center, so there is no need to apply extreme force.
- Cooling and Lubrication: For best results and to extend the life of the bit, use a cutting fluid or lubricant, especially when drilling into stainless steel and other hard metals.
- Drill Through: Maintain steady pressure and a consistent speed as you drill. Allow the bit’s flutes to eject the chips. If you feel resistance or hear a screeching sound, you may be pushing too hard or need more lubrication.
BENEFITS OF USING IRWIN 1/2″ X 6″ COBALT HSS 135 DEGREE DRILL BIT (63132):
- This drill bit is specifically engineered to handle the demands of professional metalworking.
- The M-35 cobalt alloy and advanced tip design work together to provide a superior drilling experience.
- You will find that this bit maintains its sharpness longer than standard HSS bits, allowing you to complete more jobs with a single tool.
- The precision 135° split point ensures that your holes are accurately placed and sized, reducing the need for rework.
- The efficient chip ejection and heat resistance lead to a smoother, faster drilling process, saving you time and effort on every project.
FEATURES:
- Contains 5–8% cobalt alloy content for increased longevity.
- Built for high-tensile strength material drilling tasks.
- Tip geometry is self-centering for precise starts.
- Minimizes walking on curved or uneven surfaces.
- Engineered for quick and efficient chip removal.
- Gold oxide coating resists corrosion and heat.
- Jobber length balances reach with tool control.
- Compatible with both handheld drills and drill presses.





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