Irwin 29-Piece Cobalt M35 HSS Fractional Drill Bit Set (3018002)

The Irwin 29-Piece Cobalt M35 HSS Fractional Drill Bit Set (3018002) is a specialized collection of bits crafted for professionals who regularly work with demanding materials. The set is engineered to provide reliable performance and extended life when drilling into tough metals such as hardened steel, high-alloy steel, cast iron, and stainless steel. The bits are constructed from M35 cobalt high-speed steel, which contains 5% cobalt. This specific alloy enhances the bits' ability to withstand the high temperatures and significant abrasion that occur when drilling through hard materials.

KEY FEATURES AND BENEFITS:

• Superior Material Composition: M35 cobalt high-speed steel with 5% cobalt offers exceptional heat and abrasion resistance, extending bit life when drilling hardened and stainless steels.
• Precision Drilling Starts: 135-degree split-point tip ensures immediate drilling on contact, preventing wandering and eliminating the need for a center punch.
• Comprehensive Fractional Set: Includes 29 fractional bits from 1/16" to 1/2" in 1/64" increments, covering a wide range of drilling needs.
• Protective and Organized Case: Rubber over-molded metal index case resists drops and keeps bits organized, with clear size markings.
• Enhanced Compatibility: Reduced shank on bits over 3/8" fits standard 3/8" drill chucks, increasing versatility.

SPECIFICATIONS:

• Included in Product: 29-Piece Cobalt M35 HSS Fractional Drill Bit Set
• Case Material: Rubber Over-molded Metal Index Case
• Drill Bit Material: M35 Cobalt High-Speed Steel (5% Cobalt)
• Drill Bit Sizes: 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8", 25/64", 13/32", 27/64", 7/16", 29/64", 15/32", 31/64", 1/2"
• Point Angle: 135-degree Split-Point

HOW TO USE:

• Select the Correct Bit: Open the metal index case and choose the appropriate drill bit size, referring to the marked slots or the included tap and drill chart for tapping holes.
• Secure the Bit in the Drill: Insert the bit shank into your drill chuck, ensuring it is centered and tightened to prevent slipping.
• Prepare the Workpiece: Mark the drilling location; a pilot dimple is optional due to the split-point tip. Secure the material with clamps or a vice.
• Drill with Proper Technique: Start drilling at low to moderate speed with steady pressure. Use cutting fluid for hard metals and avoid excessive force.
• Clear Chips and Finish: Periodically back the bit out to clear debris and prevent overheating. Continue until the hole is complete, then remove the bit and turn off the drill.

BENEFITS OF USING IRWIN 29-PIECE COBALT M35 HSS FRACTIONAL DRILL BIT SET (3018002):

• Extended tool life from cobalt-enhanced steel that resists heat and abrasion.
• Faster drilling starts and less pressure needed due to the split-point design.
• Accurate hole placement without bit wandering.
• Wide size range for versatile applications.
• Organized, durable case for protection and easy transport.

FEATURES:

• M35 cobalt high-speed steel construction with 5% cobalt content.
• 135-degree split-point tip for instant, precise drilling starts.
• Reduced shank on bits larger than 3/8" for compatibility with standard drill chucks.
• Rubber over-molded metal index case offers drop protection.
• Includes tap and drill selection chart for convenience.
• Removable cartridges in the case for organized storage.
• Fractional bit sizes from 1/16" to 1/2" in 1/64" increments.