Klein Tools Bi-Metal Hole Saw...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$15.93
Klein Tools Bi-Metal Hole Saw

Klein Tools Bi-Metal Hole Saw

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Model: 31940

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

$15.93
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Bi-Metal Hole Saw, 2-1/2-Inch

  • Warnings

    • Read and follow safety instructions in power tool owners manual.
    • Never use on or near live electrical circuits.
    • Always wear approved eye protection.

  • Features

    • Multiple slots provide different leverage points to easily remove slugs
    • Heavy-duty steel construction includes a thick back plate to withstand abuse
    • Cuts precise holes in drywall, ceiling tile steel, wood, plastic and stainless steel
    • Hex-shaped base for easy removal from arbor
    • Optimized for cutting steel including stainless steel
    • Long lasting, fast cutting blade
    • Use with Klein Tools Arbor (Cat. No. 31906), sold separately


31940 - spec sheet

Manufacturer Resources

Spec Sheet

Product Specs

Department:
Tools
Product Type:
Hole Saw
Product Subgroup:
Hole Saws & Bits
For Use With:
31906
Product Group:
Power Tools & Accessories
Product Height:
2.7 in
Product Width:
4.77 in
Product Depth:
6.57 in

Klein Tools 31940 – Frequently Asked Questions

1) Does the Klein Tools bi-metal hole saw come with an arbor?
No arbor is included. The hole saw is designed to run on the Klein Tools arbor, Cat. No. 31906, which is sold separately. Order the arbor with the saw if you don't already have one on the shelf, or the cup won't mount to your drill.
2) Will this hole saw cut stainless steel, or do I need a carbide cutter?
The Klein bi-metal hole saw is optimized for cutting steel including stainless, and also handles drywall, ceiling tile steel, wood and plastic. For an electrician cutting stainless panels, enclosures or strut-mounted boxes, this is the right cup. Keep speed low and pressure steady on stainless to protect the teeth.
3) How do you get the slug out of a Klein bi-metal hole saw?
The cup has multiple slots in the side wall giving you different leverage points to pry the slug free with a screwdriver, rather than fighting one fixed opening. That matters on repetitive work like cutting a run of recessed can or speaker openings.
4) Can I use this hole saw on an energized panel or live circuit?
No. Klein's instructions are explicit: never use on or near live electrical circuits. De-energize and verify before cutting, wear approved eye protection, and follow the safety instructions in your power tool's manual.
5) Which Klein hole saw size do I need for a 2-1/2 inch opening?
Hole saws are sized by the diameter of the hole they cut, so Cat. No. 31940 cuts a 2-1/2 inch hole and Cat. No. 31944 cuts 2-3/4 inch. If you are clearing a conduit fitting or a round box, size to the fitting's required opening, not to the trade size of the pipe.
6) Does this hole saw get stuck on the arbor?
The base is hex-shaped so you can put a wrench on it and back the cup off the arbor after it has been torqued down in hard material. That's the usual complaint with round-base cups, and it is addressed here.
7) Is a bi-metal hole saw tough enough for daily commercial use, or will the cup deform?
Construction is heavy-duty steel with a thick back plate, which is the part that usually distorts when a cup binds in sheet steel and the drill kicks. For MRO and contractor use on mixed material, that back plate is the durability spec to look at.
How fast can I get the Klein Tools 31940 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 Klein Tools 31940 come with a warranty?
Absolutely. The Klein Tools 31940 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 Klein Tools 31940?
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 Klein Tools 31940 from ZenSupply?
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