Milwaukee 48-89-2327 Cobalt Re...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$8.97
Milwaukee 48-89-2327 Cobalt Red Helix Drill Bit

Milwaukee 48-89-2327 Cobalt Red Helix Drill Bit

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Model: 48-89-2314

In Stock (leaves warehouse same day if ordered before 3pm ET)

$8.97
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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.

Manufacturer Resources

Product Specs

Product Type:
Twist Drill Bit
Series:
Red Helix
Department:
Electrical
Product Subgroup:
Drill & Driver Bits
list_batch:
MWK-20260918
Product Material:
Cobalt Steel
Product Group:
Power Tools & Accessories

Milwaukee 48-89-2314 – Frequently Asked Questions

1) What sizes do the Milwaukee Cobalt Red Helix drill bits come in?
Five fractional sizes are offered: 17/64 inch (48-89-2314), 23/64 inch (48-89-2320), 27/64 inch (48-89-2324), 29/64 inch (48-89-2326), and 15/32 inch (48-89-2327). The 15/32 inch bit works out to 0.4688 inch decimal, which is the common clearance size for 7/16 inch bolts.
2) Will a cobalt Red Helix bit drill through hardened steel and stainless, or do I need something else?
Cobalt is the right pick for tough alloys. These bits are solid cobalt steel, which holds its cutting edge under the heat of continuous drilling in hardened steel where a plain high-speed steel bit dulls and burns. For drilling tile, glass, or masonry-type material, a twist bit is the wrong tool entirely; that calls for a grit-edge bit such as the Lenox D/S-10Dg diamond grit bit.
3) Can these Milwaukee cobalt bits be used in a drill press, or only a handheld drill?
Both. The Red Helix cobalt bits are rated for handheld drills and drill presses, which is why they show up in fabrication shops as well as on service calls. In a press you get the steadier feed cobalt likes; handheld, the helix geometry pulls chips clear so the flutes don't pack and overheat.
4) I need the Milwaukee bit for a 15/32 hole, what is the part number to order?
Order 48-89-2327. That is the 15/32 inch Milwaukee Cobalt Red Helix bit, 0.4688 inch decimal diameter. If you're drilling a step below that, 29/64 inch is 48-89-2326.
5) I need a hole larger than 15/32 inch - what are my options besides the Milwaukee cobalt Red Helix bit?
The Milwaukee cobalt Red Helix bits run 17/64 inch, 23/64 inch, 27/64 inch, 29/64 inch, and 15/32 inch, so 15/32 inch is the top of that range. For a 5/8 inch hole, the Lenox 12111-10DGHS D/S-10Dg diamond grit bit is a larger diameter, but note it is a diamond grit abrasive bit rather than a cobalt twist bit, so match it to the material you are drilling rather than treating it as a bigger version of the Milwaukee.
6) What is the Red Helix flute actually doing differently from a standard twist bit?
The Red Helix flute geometry on these Milwaukee cobalt bits is cut to evacuate chips away from the cutting edge faster. Less chip packing means less friction, less heat at the tip, and a bit that keeps cutting instead of rubbing, which matters most on deep holes in thick plate.
7) Are these cobalt bits sold individually or only as a set?
Each Milwaukee Cobalt Red Helix bit is ordered by its own size and part number, so you can buy a single replacement in the size you burned up rather than a full index. Five sizes are carried, from 17/64 inch up to 15/32 inch.
How fast can I get the Milwaukee 48-89-2314 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Milwaukee 48-89-2314 come with a warranty?
Absolutely. The Milwaukee 48-89-2314 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Milwaukee 48-89-2314?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Milwaukee 48-89-2314 from ZenSupply?
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