Milwaukee 48-89-2728 THUNDERBO...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1.52
Milwaukee 48-89-2728 THUNDERBOLT Black Oxide Drill Bit

Milwaukee 48-89-2728 THUNDERBOLT Black Oxide Drill Bit

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Model: 48-89-2717

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

$1.52
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Milwaukee 48-89-2728 THUNDERBOLT 11/32" Black Oxide Drill Bit

The Milwaukee 48-89-2728 THUNDERBOLT 11/32" Black Oxide Drill Bit is built for professionals and serious DIY users who need a dependable bit for demanding jobsite and shop applications. Part of Milwaukee's THUNDERBOLT series, this 11/32" bit is manufactured with a black oxide finish that helps protect against corrosion and reduce friction during drilling. Milwaukee designs the THUNDERBOLT line to deliver consistent hole sizing and reliable performance across repeated use, making this bit a practical addition to any tool bag or shop drawer. From framing and fabrication work to general maintenance and repair tasks, the 48-89-2728 is sized to handle a variety of drilling jobs where precision and durability matter. Milwaukee stands behind the THUNDERBOLT line as part of its broader drilling and fastening accessory offering, giving users a trusted option when replacing worn bits or building out a complete bit set.

Key Features

  • Trade Size: Precision-ground 11/32" diameter delivers accurate, repeatable hole sizing for a wide range of drilling applications, from pilot holes to clearance holes.
  • Black Oxide Finish: The black oxide coating on this Milwaukee bit is designed to resist corrosion and reduce surface friction, helping the bit run cooler and last longer through repeated use.
  • THUNDERBOLT Series Engineering: As part of Milwaukee's THUNDERBOLT lineup, this bit is engineered to provide dependable, consistent drilling performance for professional and everyday use.
  • Milwaukee Model 48-89-2728: Manufactured by Milwaukee under model number 48-89-2728, this bit is designed to work with standard corded and cordless drills and drivers.
  • Shop-Ready Design: Designed to fit standard drill chucks, this THUNDERBOLT bit is ready to use with popular corded and cordless drill/driver systems found on jobsites and in home workshops.
  • Versatile Shop Tool: Sized for common drilling tasks, the 11/32" THUNDERBOLT bit is a useful addition to any drill bit set, tool box, or jobsite kit.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • General-Purpose Drilling Tasks
  • Construction and Jobsite Use
  • Maintenance and Repair Projects
  • Home Improvement and DIY Projects
  • Professional Trade and Fabrication Work
  • Tool Bag, Tool Box, and Jobsite Kit Restocking

Why Milwaukee?

Milwaukee has built a reputation among professional trades for manufacturing durable, dependable tools and accessories, and the THUNDERBOLT 48-89-2728 drill bit reflects that standard. With a black oxide finish designed to resist corrosion and reduce friction, this 11/32" bit is built to hold up to the repeated demands of jobsite and shop use. Whether you're a contractor, tradesperson, or DIYer, choosing a Milwaukee THUNDERBOLT bit means choosing a tool designed for consistent, reliable performance. By pairing the THUNDERBOLT series' engineering with a black oxide finish, Milwaukee gives professionals and homeowners alike a bit they can count on for demanding jobsite and shop conditions.

Manufacturer Resources

Product Specs

Product Type:
Twist Drill Bit
Product Finish:
Black Oxide
Series:
THUNDERBOLT
Department:
Electrical
Product Subgroup:
Drill & Driver Bits
list_batch:
MWK-20260918
Product Group:
Power Tools & Accessories
Product Length:
6 in

Milwaukee 48-89-2717 – Frequently Asked Questions

1) I need to drill concrete anchors, are these THUNDERBOLT bits the right thing?
No. Black oxide twist bits are for general drilling in metal, wood and plastics, not masonry. For concrete or block you want a carbide-tipped rotary/percussion bit such as the Minerallac 59736 Relton 1/2 inch x 6 inch. Use the THUNDERBOLT bits for pilot and clearance holes in steel studs, strut, enclosures and lumber.
2) Which Milwaukee part number is the 11/32 inch THUNDERBOLT bit?
11/32 inch is Milwaukee 48-89-2728. The neighbouring sizes are 48-89-2727 at 21/64 inch and 48-89-2730 at 3/8 inch, which is worth knowing if you are stepping a hole up or down by one increment.
3) Will THUNDERBOLT bits chuck into a standard cordless drill?
Yes. These bits are made to fit standard drill chucks and work with common corded and cordless drill/driver systems, so no adapter or impact-specific holder is needed.
4) Can I cut a hole in tile or stone with a THUNDERBOLT drill bit?
Not with these. A black oxide twist bit will not survive hard tile, stone or masonry. For that work the Lenox 12111-10DGHS is a 5/8 inch diamond grit bit, which is the abrasive-grit style made for those materials.
5) Which THUNDERBOLT sizes should I stock for general electrical and maintenance work?
The lineup covers 1/16 inch up to 27/64 inch in 64ths and 32nds, so you can stock straight fractional sizes for clearance holes (1/8, 3/16 range, 1/4 range, 5/16, 3/8) and the 64th increments (7/64, 11/64, 13/64, 15/64, 17/64, 19/64, 21/64, 25/64, 27/64) for tap drills and tight-tolerance pilot holes. Buying by individual model number lets you replace only the sizes that wear out instead of a whole set.
6) I need a 1/2 inch hole and the largest THUNDERBOLT bit is smaller than that. What should I order?
The THUNDERBOLT black oxide range tops out at 27/64 inch. For a 1/2 inch hole the Minerallac 59736 Relton bit is a 1/2 inch by 6 inch carbide-tipped rotary/percussion bit, and the Lenox 12111-10DGHS is a 5/8 inch diamond grit bit if you need to go larger still. Both are built for hard materials rather than general metal and wood drilling, so match the bit to the substrate.
7) What bit should I use for tile, stone or other abrasive material instead of a twist bit?
A black oxide twist bit like the THUNDERBOLT 48-89-2728 cuts with a ground edge and is intended for general-purpose drilling. Abrasive material is better served by a grit-edged bit such as the Lenox 12111-10DGHS, a 5/8 inch D/S-10Dg diamond grit bit that abrades rather than cuts.
8) Is the Relton 59736 a substitute for a THUNDERBOLT bit in a standard drill/driver?
They are not interchangeable. The THUNDERBOLT bits are black oxide twist bits made to run in standard corded and cordless drill chucks for general drilling. The Minerallac 59736 Relton bit is a carbide-tipped rotary/percussion bit intended for hammer drilling, and it comes only in 1/2 inch by 6 inch rather than the fractional range the THUNDERBOLT bits cover.
9) What does the black oxide finish on these bits actually do for me?
The black oxide coating resists corrosion and cuts surface friction, which helps the bit run cooler through repeated holes. Practically, it means bits stored in a damp van or gang box hold up better, and it is the reason black oxide is the usual general-purpose choice over plain bright-finish bits.
How fast can I get the Milwaukee 48-89-2717 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 48-89-2717 come with a warranty?
Absolutely. The Milwaukee 48-89-2717 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 48-89-2717?
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 48-89-2717 from ZenSupply?
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