Milwaukee Tool 49-56-9830 1-3/...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$18.76
Milwaukee Tool 49-56-9830 1-3/8" SHOCKWAVE™ Impact Duty Hole Saw

Milwaukee Tool 49-56-9830 1-3/8" SHOCKWAVE™ Impact Duty Hole Saw

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Model: 49-56-9820

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

$18.76
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Milwaukee 49-56-9820 SHOCKWAVE 1-1/8" Bi-Metal Impact Duty Hole Saw, 8-Teeth Constant Pitch

The Milwaukee 49-56-9820 SHOCKWAVE Impact Duty Hole Saw is built to deliver a 1-1/8" (1.125-inch) cutting diameter for fast, clean, repeatable holes in wood, plastic, and thin-gauge metal. This hole saw combines a bi-metal blade with an 8-tooth thin wall constant pitch tooth design, giving pros a tool engineered for durability and consistent cutting performance even under the stress of repeated impact-duty use. As part of Milwaukee's SHOCKWAVE line, the 49-56-9820 is designed from the ground up to hold up to the demanding conditions found on real jobsites, helping tradespeople work faster without sacrificing cut quality or tool life.

Key Features

  • Cutting Diameter: 1-1/8" (1.125-inch) diameter delivers precise, repeatable hole sizing for boxes, fixtures, and pass-throughs.
  • Bi-Metal Blade Construction: Combines flexibility with edge retention to resist breakage and extend usable blade life.
  • 8-Tooth Design: Delivers efficient chip removal and a smoother, more controlled cut through varied materials.
  • Thin Wall Profile: Reduces material buildup inside the saw body and simplifies plug removal after each cut.
  • Constant Pitch Tooth Pattern: Maintains even tooth engagement across the cutting edge for reduced vibration and cleaner cut walls.
  • SHOCKWAVE Impact Duty Rating: Engineered to withstand the added stress of impact-driven applications for longer overall tool life.
  • Consistent Cut Quality: The combined blade geometry and tooth pattern help maintain accuracy across repeated cuts.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Cutting Holes for Electrical Boxes and Conduit Penetrations
  • Wood, Plastic, and Thin-Gauge Metal Drilling
  • Plumbing and HVAC Rough-In Work
  • General Construction and Remodeling Projects
  • Cabinet, Fixture, and Millwork Installation
  • Professional Jobsite and Contractor Use

Why Milwaukee?

Milwaukee's SHOCKWAVE Impact Duty hole saws pair bi-metal blade construction with a constant pitch, 8-tooth cutting pattern to deliver reliable, long-lasting performance on demanding jobsites. The thin wall profile keeps cuts clean and plug removal simple, while the impact duty rating helps the 49-56-9820 stand up to repeated, high-stress use. Trust Milwaukee for durable, dependable cutting accessories built for everyday professional trade work.

Manufacturer Resources

Product Specs

Product Type:
Hole Saw
Department:
Tools
Product Subgroup:
Hole Saws & Bits
Product Length:
2.5 in
Bit Type:
Hole Saw
Product Group:
Power Tools & Accessories

Milwaukee 49-56-9820 – Frequently Asked Questions

1) What sizes do the Milwaukee SHOCKWAVE Impact Duty bi-metal hole saws come in, and what are the part numbers?
Two diameters: 1-1/8 inch, part number 49-56-9820, and 1-3/8 inch, part number 49-56-9830. Order by the diameter you need to cut, since each saw is a single fixed cutting size.
2) How deep can the Milwaukee 49-56-9820 hole saw cut, and will it get through a 2x4?
The saw body measures 2.5 inches in overall length, so usable cutting depth is less than that once the arbor and pilot bit are accounted for. That handles single-thickness lumber, plywood, subfloor and plastic in one pass, but it will not clear the 3-1/2 inch width of a 2x4 in a single plunge. For a through-hole in a stud width, cut from both faces or use a dedicated deeper saw.
3) Does the Milwaukee 49-56-9830 hole saw come with an arbor and pilot bit?
The 49-56-9830 is the hole saw cup only. A compatible arbor with pilot drill is required to mount it in a drill or impact driver and is ordered separately, so check what you already have on the truck before buying.
4) Can I run these Milwaukee SHOCKWAVE hole saws in an impact driver instead of a drill?
Yes, that is the point of the SHOCKWAVE Impact Duty rating. The bi-metal blade and tooth geometry are built to take the hammering stress of impact-driven use rather than just rotary drilling, so you can run it off the impact driver already on your belt.
5) Will a bi-metal impact duty hole saw cut metal studs and electrical enclosures, or do I need a carbide saw?
Bi-metal handles wood, plastic and thin-gauge metal, which covers steel studs, enclosure knockouts and sheet metal pass-throughs. It is not the tool for masonry, tile, brick or cast iron, and for heavy stainless or abrasive board you want a carbide-tipped saw instead.
6) Which Milwaukee hole saw size do I use for 1/2 inch and 3/4 inch conduit through a stud?
Pick the diameter against your conduit outside diameter plus clearance: the 1-1/8 inch (49-56-9820) suits smaller single runs, and the 1-3/8 inch (49-56-9830) gives extra room for pulling and for larger trade sizes. Both are sold for electrical box and conduit penetration work, plus plumbing and HVAC rough-in.
7) Is it hard to knock the plug out of these Milwaukee SHOCKWAVE hole saws?
The thin wall profile reduces material packing inside the cup, which makes the slug easier to pop out between cuts. That matters on repetitive work like a run of box holes, where plug removal is most of the lost time.
8) Why would I choose an 8-tooth constant pitch hole saw over a variable pitch one?
The constant pitch, 8-tooth pattern keeps tooth engagement even across the cutting edge, which lowers vibration and leaves cleaner hole walls, and the coarse 8-tooth count clears chips fast in wood and plastic. If you are cutting mostly thin sheet metal all day, a finer tooth count is gentler on the edge; for mixed wood, plastic and thin-gauge metal this geometry is the general-purpose choice.
How fast can I get the Milwaukee 49-56-9820 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 49-56-9820 come with a warranty?
Absolutely. The Milwaukee 49-56-9820 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 49-56-9820?
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 49-56-9820 from ZenSupply?
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