You may also like
Irwin Speedbor Tri-Flute Wood Drill Bit
The Irwin Speedbor Tri-Flute wood drill bit series delivers fast, clean boring in wood framing, decking, and cabinetry work. This family is available in diameters ranging from 7/16" to 1-3/8", giving pros and DIYers a full lineup of large-diameter bits to match a range of jobsite boring needs on a single, easy-to-shop page. Irwin manufactures and distributes professional-grade hand tools and power tool accessories worldwide for trade professionals who demand superior performance and durability on the job. Every bit in this series shares the same Tri-Flute design, full screw self-feed tip, and grooved 1/4" hex shank, so no matter which diameter you select from 7/16" up to 1-3/8", you get the same dependable boring performance.
Key Features
- Trade Size Range: Available in diameters from 7/16" to 1-3/8" to cover a wide range of large-diameter boring needs in wood, with this listing offering 5 selectable sizes across that range.
- Tri-Flute Design: Speedbor Tri-Flute geometry delivers faster chip ejection than standard spade bits for quicker, cleaner holes across every diameter in the series.
- 3-Edge Cutting Spurs: Cutting spurs feature 3 cutting edges for added durability and cleaner entry cuts on each bit in the lineup.
- Full Screw Tip: A full screw tip allows each bit to self-feed through wood without heavy downward pressure, regardless of the diameter selected.
- Grooved Hex Shank: The grooved 1/4" hex shank prevents slipping in the drill chuck or bit extension on every size in the family.
- Universal Fit: Fits all standard 1/4" Quick Change chucks for fast bit swaps between sizes on the jobsite.
- Finish: Black finish is consistent across the entire Speedbor Tri-Flute series.
Technical Specifications
- Warranty: NLW
- Claims Needed: No
- Individual Vs. Set (Syndigo): INDIVIDUAL
- Net Lit-Ion Y/N: No
- Country of Origin: China
- Battery Included: No
- Charger Included: Yes
- Power Source: NON-ENERGY USING
Typical Applications
- Boring large-diameter holes in wood framing and studs
- Deck, fence, and post construction
- Cabinetry and furniture-grade woodworking
- Use with standard 1/4" Quick Change drill chucks and bit extensions
- Professional and DIY woodworking projects requiring multiple hole diameters from 7/16" to 1-3/8"
Why Irwin?
Irwin manufactures and distributes professional-grade hand tools and power tool accessories worldwide for trade professionals who demand superior performance and durability on the job. The Speedbor Tri-Flute design, 3-edge cutting spurs, full screw self-feed tip, and grooved 1/4" hex shank shared across every diameter in this series, from 7/16" to 1-3/8", reflect that same commitment to dependable, jobsite-ready performance for framing, decking, and cabinetry work.
Manufacturer Resources
Product Specs
- Warranty:
- NLW
- Claims Needed:
- No
- Individual Vs. Set (Syndigo):
- INDIVIDUAL
- Net Lit Ion Y N:
- No
- Battery Included:
- No
- Charger Included:
- Yes
- Power Source:
- NON-ENERGY USING
- Product Type:
- Wood Boring Bit
- Product Finish:
- Black
- Department:
- Electrical
- Product Subgroup:
- Drill & Driver Bits
- list_batch:
- IRW-20260923
- Series:
- Speedbor Tri-Flute
- Product Group:
- Power Tools & Accessories
Irwin 3041015 – Frequently Asked Questions
1) Will Irwin Speedbor Tri-Flute bits fit an impact driver or quick-change chuck?
Every Speedbor Tri-Flute bit uses a grooved 1/4 inch hex shank that fits all standard 1/4 inch Quick Change chucks, so it drops straight into a quick-change holder or a bit extension. The groove keeps the shank from spinning out under load, which matters on the bigger diameters where a round shank would slip.
2) What diameters do the Irwin Speedbor Tri-Flute wood bits come in?
Five diameters are offered: 7/16, 1/2, 11/16, 15/16 and 1-3/8 inch. That covers the usual framing runs, 15/16 for larger conduit and plumbing penetrations through studs, and 1-3/8 for the biggest openings in the family.
3) Is a Tri-Flute bit better than a spade bit for boring studs?
For wood framing, the Tri-Flute geometry ejects chips faster than a standard spade bit, so the hole clears instead of packing, and the three cutting edges on the spurs give a cleaner entry. The full screw tip pulls the bit through on its own, so you are not leaning on the drill the way you do with a spade bit. A spade bit is the cheaper throwaway for rough, occasional holes; the Tri-Flute is for repeat boring through studs, joists and plates.
4) Is the Irwin Speedbor Tri-Flute sold as a single bit or a set?
These are sold individually by diameter, not as a kit. Each size has its own Irwin part number (for example 3041001 for the 1/2 inch and 3041020 for the 1-3/8 inch), so if you want multiple diameters for a truck stock you order each one separately.
5) Can I use these bits for drilling metal or masonry?
No. The Speedbor Tri-Flute is a wood boring bit, intended for wood framing, decking, fencing, posts, cabinetry and furniture work. For steel or masonry you need a twist bit or a hammer-drill masonry bit instead; a screw-tip wood auger style bit will not cut those materials.
6) Can these bits be run on a bit extension for boring through a wall cavity?
Yes. The grooved 1/4 inch hex shank is made to seat in a bit extension as well as a chuck, and the groove is what keeps it from slipping once the extension is loaded. That is the normal setup for electricians drilling top plates or boring deep between studs.
7) What is the Irwin part number for the 15/16 inch Speedbor Tri-Flute bit?
The 15/16 inch diameter is Irwin 3041020's smaller sibling, part number 3041018. The other sizes run 3041015 for 7/16 inch, 3041001 for 1/2 inch, 3041016 for 11/16 inch and 3041020 for 1-3/8 inch, which is what a distributor or purchasing desk needs when matching an existing line item.
How fast can I get the Irwin 3041015 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 Irwin 3041015 come with a warranty?
Absolutely. The Irwin 3041015 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 Irwin 3041015?
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 Irwin 3041015 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.