IVY Classic Drill Bits 04025 25/64 Inch Swift Bore Cobalt 6 Pack (135 Degree Split Point 3/8 Inch Reduced Shank Stainless Steel Boring Tool)

IVY Classic Swift Bore 04025 25/64-Inch Cobalt Steel Reduced Shank Drill Bit 6-Pack

The IVY Classic 04025 25/64-Inch Swift Bore Cobalt Steel Drill Bit 6-Pack provides severe thermal resistance and high-speed penetration when boring into work-hardening stainless steel, cast iron, titanium, and high-tensile alloy plate. Engineered from premium cobalt alloy high-speed steel with a heat-dissipating gold surface finish, each 5-1/8-inch jobber length bit incorporates a 135-degree split point that self-centers instantly on contact to eliminate drill walking without center punching. The 3/8-inch reduced shank enables these 25/64-inch cutters to mount securely in standard 3/8-inch and 1/2-inch drill chucks for heavy metal fabrication, machinery maintenance, and field repair.

Best Used For:

• Stainless Steel & Alloy Machining: Drilling precision tap clearances and bolt through-holes in 304/316 stainless plate without work-hardening the metal face.
• Heavy Equipment Repair: Boring structural fastener holes through cast iron housings, structural steel truck chassis rails, and thick weldments.
• General Industrial Fabrication: Drilling high-tensile carbon steel plate, bronze bushings, and hard composites using portable handheld drills with 3/8-inch chucks.

Key Performance & Safety Features

• Cobalt Alloy Tool Steel: High-density cobalt-infused metallurgy retains red hardness and cutting edge sharpness under severe operational friction heat.
• 135-Degree Split Point: Self-centering tip architecture bites immediately into curved and flat metal surfaces, eliminating drill walking and reducing feed thrust.
• 3/8-Inch Reduced Shank: Fits standard 3/8-inch drill chucks, expanding the drilling capacity of compact power drills without requiring heavy industrial machinery.
• Precision-Ground Gold Finish: Specialized surface treatment improves lubricity, reduces chip friction, and prevents cutting edge burnout.
• Jobber Length Flute Geometry: Rigid 5-1/8-inch body profile balances deep hole reach with maximum torsional deflection resistance during heavy feed pressure.

What's Included

• (6) IVY Classic Swift Bore 04025 25/64-Inch Cobalt Steel Reduced Shank Drill Bits

Technical Specifications

Pro-Tip: Apply a continuous bead of cutting lubricant and maintain steady downward drill feed at low RPM when boring stainless steel; allowing the bit to dwell without cutting causes friction that quickly work-hardens the material surface.