Irwin 7/32" x 3-1/8" Left Cobalt HSS Fractional Drill Bit (30514)

The Irwin 7/32" x 3-1/8" Left Cobalt HSS Fractional Drill Bit (30514) is a specialized tool engineered for the removal of broken fasteners, screws, and bolts. As a left-hand drill bit, it operates in a reverse (counter-clockwise) rotation. This unique design allows it to bite into a fastener and apply a loosening pressure while drilling, often removing the seized or broken piece without the need for a separate extractor. Made from M42 cobalt high-speed steel, this bit is built to perform in tough conditions, offering superior resistance to heat and abrasion when drilling through materials like hardened alloys, stainless steel, and titanium.

KEY FEATURES AND BENEFITS:

• M42-grade high-speed steel with 8% cobalt for exceptional heat and abrasion resistance.
• Left-hand spiral and reverse cutting action helps remove broken fasteners without tightening them.
• 135˚ split point allows precise drilling with minimal walking or wandering.
• Mechanics length offers added rigidity and strength for better durability.
• Ideal for use on hardened alloys, stainless steel, and titanium.

SPECIFICATIONS:

• Model Number: 30514
• Material: M42 High-Speed Steel with 8% Cobalt
• Drill Bit Diameter: 7/32" (0.2188")
• Overall Length: 3-1/8"
• Flute Length: 1-5/8"
• Shank Type: Straight
• Hand of Cut: Left-Hand (Counter-clockwise)
• Point Angle: 135˚
• Point Style: Split Point
• Finish: Gold Oxide

HOW TO USE:

1. Select the Correct Bit: Choose a bit slightly smaller than the diameter of the broken fastener to be removed.
2. Secure the Bit: Insert the drill bit into your drill or driver and tighten the chuck securely to prevent slippage.
3. Set the Rotation: Set your drill to the reverse (counter-clockwise) setting. This is the operating direction for the left-hand drill bit.
4. Position and Start Drilling: Place the tip of the bit on the center of the broken fastener. Apply gentle, steady pressure and begin drilling slowly.
5. Remove the Fastener: As the bit drills into the fastener, the reverse cutting action may cause the fastener to loosen and spin out. Once the fastener starts to turn, continue to run the drill in reverse until it is completely backed out.

BENEFITS OF USING IRWIN 7/32" X 3-1/8" LEFT COBALT HSS FRACTIONAL DRILL BIT (30514):

• Simplifies the process of removing broken screws and bolts.
• Reduces the need for separate screw extractor kits, potentially saving time and effort.
• Minimizes the risk of further damage to the workpiece by applying a loosening force while drilling.
• Provides a high-performance solution for drilling in very hard or abrasive metals.
• The compact and strong mechanics length design offers added reliability in tight spaces.

FEATURES:

• Heat-resistant cobalt alloy: M42 cobalt construction for durability under extreme conditions.
• Reverse operation: Left-hand cutting action engineered for extracting broken fasteners.
• Accurate drilling start: 135˚ split point minimizes bit walking.
• Low-friction coating: Gold oxide finish improves chip flow and reduces wear.
• Enhanced strength: Shortened mechanics length increases rigidity and minimizes breakage.
• Efficient chip removal: Heavy-duty spiral flute helps maintain clean holes.
• Versatile application: Suitable for hardened steel, titanium, stainless steel, and tough alloys.