Milwaukee 48-89-2327 Cobalt Red Helix Drill Bit

Milwaukee 48-89-2327 15/32" Cobalt Red Helix Drill Bit, 0.4688" Diameter

The Milwaukee 15/32" Cobalt Red Helix drill bit is built for professionals who need reliable performance when drilling through metal on the jobsite or in the shop. This bit measures 15/32" in trade size, which corresponds to a precise 0.4688" decimal diameter, giving fabricators and machinists a consistent, repeatable hole size for bolt clearance, hardware installation, and general metalworking tasks. Manufactured from solid cobalt steel, this bit is engineered to withstand the heat generated during continuous drilling in hardened steel and other tough alloys, helping it hold its edge longer than standard high-speed steel options. The distinctive Red Helix flute geometry is designed to channel chips away from the cutting edge efficiently, reducing friction, minimizing heat buildup, and supporting smoother, faster cuts pass after pass. Whether used in a handheld drill or a drill press, this Milwaukee bit is built to deliver dependable results on demanding industrial and commercial metal drilling applications.

Key Features

• Trade Size: 15/32" (0.4688" decimal diameter) delivers a precise, repeatable hole size for bolt clearance and hardware installation work.
• Durable Cobalt Construction: Solid cobalt steel body resists heat buildup and maintains cutting edge integrity when drilling through hardened steel and tough alloys.
• Red Helix Flute Design: Engineered flute geometry channels chips away from the cutting edge for smoother, faster cutting action and reduced friction.
• Heat Resistance: Cobalt steel construction is formulated to outperform standard high-speed steel bits in heat-intensive, continuous drilling applications.
• Precision Diameter: Exact 0.4688" decimal equivalent ensures consistent, accurate hole sizing across repeated drilling operations.
• Jobsite Ready: Suitable for use in handheld drills and drill presses across metal fabrication, maintenance, and construction environments.

Technical Specifications

• Trade Size: 15/32"
• Decimal Diameter: 0.4688"
• Material: Cobalt Steel
• Flute Design: Red Helix

Typical Applications

• Metal and Steel Drilling
• Fabrication and Metalworking Shops
• Industrial Manufacturing Facilities
• Commercial and Residential Construction
• Equipment Repair and Maintenance
• Bolt Hole and Hardware Clearance Drilling

Why Milwaukee?

Milwaukee engineers this drill bit from solid cobalt steel and pairs it with the Red Helix flute design to give professional tradespeople a bit that can stand up to the heat and stress of continuous metal drilling. The precise 15/32" (0.4688") diameter delivers accurate, repeatable results whether the bit is used on the jobsite or in a fabrication shop, and the cobalt construction is built to outlast standard steel bits in demanding, high-heat applications. For professionals who need dependable performance backed by Milwaukee's reputation for durable, professional-grade tooling, this cobalt Red Helix bit is engineered to get the job done.