Festool Auger Drill Bits
For deep holes through timber studs and joists, Festool auger drill bits use a screw tip to pull the cutting edge into the wood.
Chippies and first-fix installers use them where depth and chip clearance matter. Match the shank to your chuck, check usable drilling length, and choose the diameter your job needs.
What Are Festool Auger Drill Bits Used For?
- Drill cable routes through timber studs during first fix, keeping hole positions within the permitted zones for the structure.
- Bore through solid timber joists for service runs where a short wood bit will not provide enough working depth.
- Prepare bolt holes through timber posts and structural connections, using the specified diameter and keeping the drill square to the face.
- Clear chips from deeper timber holes through the auger flute, withdrawing the bit regularly when shavings start packing around it.
Choosing the Right Festool Auger Drill Bits
Buy for the hole diameter, working depth and drill connection you actually need; extra length is no help if the drill will not fit between the joists.
1. Hole Diameter and Structural Limits
For cable or pipe routes, allow the clearance specified for the installation without removing unnecessary timber. If you are drilling load-bearing joists or engineered timber, confirm permitted hole sizes and positions first. Owning a larger bit does not make a larger hole acceptable.
2. Working Length and Access
Check usable drilling length rather than overall length alone. The bit must pass through the timber, but you also need space for the drill body and chuck. Use the shortest bit that reaches properly when working between closely spaced timbers.
3. Shank and Drill Compatibility
Check the listed shank profile, shank size and holder requirements before ordering. Do not assume every Festool auger bit fits every quick-change holder. If you are matching a bit to Festool Drill Drivers, confirm the chuck arrangement and the drill's rated capacity in wood.
4. Single Bit or Set
If one fixing detail repeats throughout the job, buy the diameter specified rather than a box of sizes you will not use. For mixed drilling and fastening work, compare the listed contents of Festool Drill & Screwdriver Bit Sets; a general set is not automatically an auger drill bit set.
Who Uses Festool Auger Drill Bits?
Chippies and timber framers use auger bits for deep bolt holes through posts, beams and framing. Sparkies and plumbers reach for them during first fix when services need to pass through timber, checking permitted drilling positions before starting. Maintenance teams also use them for repairs to gates, outbuildings and heavy timber fittings.
The Basics: Understanding Auger Drill Bits
An auger cuts and feeds differently from a standard twist bit. That matters when drilling deep timber or handling a larger diameter.
1. The Screw Tip Draws the Bit In
The threaded point grips the timber and pulls the cutting edge forwards. Start square and keep the drill under control rather than leaning hard on it. Larger diameters can produce substantial reaction torque if the bit catches.
2. The Flute Carries Shavings Out
The spiral flute moves cut timber back towards the entry hole. On deep holes, withdraw periodically to clear packed shavings. If progress slows, stop and clear the bit rather than forcing it and overheating the cutting edge.
Accessories for Controlled Timber Drilling
Keep the timber secure and the drill manageable, particularly when using larger auger diameters.
1. Work Clamps
Clamp loose posts, beams and timber sections before drilling. A self-feeding bit can rotate an unsecured workpiece; holding it against your leg is not a substitute for proper restraint.
2. Compatible Auxiliary Handle
Where the drill accepts one, fit the manufacturer's approved auxiliary handle for better control of reaction torque. Check its fitting and follow the drill's instructions rather than assuming a universal handle will suit.
Choose the Right Festool Auger Drill Bits for the Job
Match the bit to the timber thickness, required opening and available working space.
| Your Job | Auger Bit Selection | Key Features |
|---|---|---|
| Running cables through timber studs | Diameter matched to the cable route | Suitable clearance, compatible shank and enough access for the drill body. |
| Drilling through thick posts or beams | Bit with sufficient usable drilling length | Working depth beyond the timber thickness and space to withdraw the bit. |
| Preparing timber bolt connections | Diameter specified by the fixing detail | Correct hole size, square entry and controlled breakthrough. |
| Working between closely spaced joists | Shortest suitable working length | Combined drill-and-bit clearance checked before buying. |
Common Buying and Usage Mistakes
- Buying by overall length alone can leave you short of drilling depth. Check the usable length and allow enough room to position and withdraw the drill.
- Treating an auger as a nail-cutting bit can damage its cutting edge or cause a sudden catch. Inspect reclaimed timber and check for concealed metal before drilling.
- Using hammer mode adds impact that is not needed for timber boring. Select rotary drilling and follow the bit and drill manufacturers' speed guidance.
- Forcing a clogged bit increases heat and strain on the drill. Stop feeding, withdraw carefully and clear the shavings before continuing.
- Drilling wherever access is easiest can weaken structural timber. Check the applicable drilling rules or the engineered timber manufacturer's instructions before making a hole.
Auger Bits vs Spade Bits vs Brad Point and Forstner Bits
Auger Bits for Deeper Timber Holes
Choose an auger for deeper through-holes where self-feeding action and chip removal are useful. It needs controlled handling and adequate drill torque, particularly at larger diameters, and is not the choice for a neat flat-bottomed recess.
Spade Bits for General First-Fix Holes
Spade bits are generally a lower-cost option for straightforward timber through-holes. Their finish varies with the design and technique, and they lack the continuous chip-carrying flute of an auger. Choose them when hole finish and deep-boring performance are less important.
Brad Point and Forstner Bits for Joinery
Choose Festool Brad Point & Forstner Bits for accurately positioned joinery holes or flat-bottomed recesses, depending on bit type. For recessed fixing heads and matching timber plugs, look at Counterbores & Plug Cutters instead of trying to make an auger do the finishing work.
Maintenance and Care
Clear the Flute After Use
Remove the bit from the drill before brushing away trapped shavings. Clean resin deposits with a suitable cleaner, following its instructions, rather than scraping the cutting edge with another tool.
Protect the Tip and Cutting Edge
Store bits separately in a holder or protective case. Loose storage with fixings and other bits can knock the cutting edges and damage the threaded point.
Keep Steel Dry
Dry damp bits before putting them away and use a light corrosion inhibitor suitable for tool steel during storage. Wipe off residue before drilling timber that will be glued or finished.
Inspect Before Reusing
Check for chipped edges, a damaged screw tip or a bent shank. Replace damaged bits; for sharpening, use a competent service familiar with auger geometry rather than grinding away the outer cutting profile.
Why Shop for Festool Auger Drill Bits at ITS?
ITS stocks the full available Festool auger drill bit range alongside the wider Festool Drill Bits selection, so you can match the diameter, working length and drilling type to the job. Stock is held in our own warehouse, ready for next-day delivery. Check the individual listing for current availability and delivery options.
Festool Auger Drill Bits FAQs
What are auger drill bits used for?
Auger bits bore holes through timber, particularly where you need more depth than a short wood bit provides. Typical jobs include cable routes through studs, service holes through joists and bolt holes through posts. They are not masonry bits, and you should not assume they can cut concealed nails.
What is the difference between an auger bit and a spade bit?
An auger has a spiral flute that carries shavings out of the hole and usually a threaded point that draws it into the timber. A spade bit has a flat cutting blade and is generally cheaper for straightforward through-holes. Augers suit deeper boring, but their self-feeding action demands a firm grip and a suitable drill.
What sizes do Festool auger bits come in?
Available diameters and lengths depend on the individual Festool bit and current range. Check each listing for cutting diameter, usable drilling length, overall length and shank dimensions before ordering. Do not treat overall length as drilling depth or assume every diameter is supplied in the same length.
Are Festool auger drill bits any good?
They are a sensible choice for timber boring when the diameter, working length and shank match your drill and job. The auger design provides self-feeding action and chip clearance, but it will not compensate for a blunt edge, concealed metal or an underpowered drill. Buy on those practical requirements rather than the badge alone.
Where are Festool tools made?
Festool is a German manufacturer with production in Germany and other European locations. The country of manufacture varies by product, and an accessory should not be assumed to share the origin of a power tool. Check the specific bit's packaging or product information if country of origin is a purchasing requirement.
Will a Festool auger bit fit my existing drill chuck?
Only if the listed shank size and profile suit your chuck or approved holder. Check those details as well as the drill's maximum wood-drilling capacity. Brand compatibility alone does not confirm that the connection is correct or that the drill can safely handle the chosen diameter.
