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Milwaukee Red Helix 3/16 in. X 3-1/2 in. L Steel Thunderbolt Drill Bit 3-Flat Shank
Milwaukee Red Helix 3/16 in. X 3-1/2 in. L Steel Thunderbolt Drill Bit 3-Flat Shank
Milwaukee Red Helix 3/16 in. X 3-1/2 in. L Steel Thunderbolt Drill Bit 3-Flat Shank
Milwaukee Red Helix 3/16 in. X 3-1/2 in. L Steel Thunderbolt Drill Bit 3-Flat Shank
Milwaukee Red Helix 3/16 in. X 3-1/2 in. L Steel Thunderbolt Drill Bit 3-Flat Shank
Milwaukee Red Helix 3/16 in. X 3-1/2 in. L Steel Thunderbolt Drill Bit 3-Flat Shank
Milwaukee Red Helix 3/16 in. X 3-1/2 in. L Steel Thunderbolt Drill Bit 3-Flat Shank

Milwaukee Red Helix 3/16 in. X 3-1/2 in. L Steel Thunderbolt Drill Bit 3-Flat Shank

Cobalt coating and a 3-flat shank keep this bit cutting cleanly through steel without slipping in the chuck.
Milwaukee MPN 48-89-2309
Sold Locally Only

This product isn’t sold on our website — see your local hardware store.

In-Store Exclusive

This one's worth the trip to the store.

This Milwaukee item is one you'll find in stores rather than online — and that's often the better way to buy. In store you get the genuine article, full manufacturer warranty, and real advice from someone who's actually handled it — no counterfeits, no gray-market resellers.

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Why isn't this online? The whole story →

About Product Overview

This Milwaukee Thunderbolt drill bit is built for drilling into steel and other metals where a standard bit gives up fast. The cobalt coating adds heat and wear resistance, so the edge holds up through repeated use, and the Red Helix flute design is engineered to clear chips and keep cutting speed consistent. The 3-flat shank locks into the chuck without slipping, even under load.

  • Drill size: 3/16 in.
  • Overall length: 3-1/2 in., flute length 2-5/16 in.
  • Finish: cobalt coated steel
  • Shank type: 3-flat shank
  • Sold individually, carded packaging

The Details Specifications

Brand Milwaukee
Model / MPN 48-89-2309
UPC 045242188246
Weight Under 1 lb
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
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About our directory. National Hardware Group is an independent retailer and directory. The local stores we list and link to are separately owned and operated — we have no ownership stake in any of them, and most pay us nothing to be included. That includes plenty of stores flying a familiar banner that people don't realize are locally owned and run, not operated by a corporation. Store owners can choose to upgrade their listing for an enhanced presence or pickup features, but the base directory is free, and inclusion is never a paid endorsement.

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