Countersink Drill Bits - A Workshop Essential
A Countersink to Rule Them All
No matter the project, Toolstoday has you covered with the different types of Amana Tool’s countersink bits!
ToolsToday’s Matt Plumlee will take a close look at the No-Mar Countersink bit and also talk about some of the other countersinks we offer!
A countersink bit is a great addition to any workshop and can be used for anything from construction projects to fine furniture. A countersink bit is generally used to drill a screw hole and a pocket for the screw head at the same time, this allows the screw head to sit flush or below the surface of the wood.
First up, I’d like to talk about my personal favorite the Amana Tool’s #55227 adjustable depth No-Mar Countersink, this is the go to bit in my workshop. The adjustable depth stop allows you to countersink to the exact same depth for every hole. The No-Thrust ball bearing stop doesn’t mar or burn the surface of the material, while the replaceable carbide tipped bit leaves you with a beautifully clean countersink with no cleanup required. The time savings alone from not having to clean up the tear-out left by many other types of countersinks make the #55227 a must have!
Move the depth stop a little deeper and this bit can also create a pocket to insert a plug into hiding the head of the screw. Using the #607-310 tapered plug cutter you can cut plugs to perfectly fill the hole left behind by the countersink and you will never know a screw was there! If you are filling many holes with plugs like this, I would also suggest you check out the #PLP-100 Carbide Tipped Non-Marring Plug Planer to help quickly trim the plugs flush and clean with the surface of the wood.
Click here for our complete line of countersink bits.
There are several different sizes of the No-Mar Countersink available with different sized drill bits and countersinks depending on the size screws you are using. If you’re wanting an economy option with similar no scratching or burning results, be sure to look into the Low Friction Adjustable Depth Stop Countersink.
No matter the job we have the perfect countersink for you!
In addition to the no mar line, we do offer many stand alone countersink options in many different sizes with hex shank, round shank, shank-less, tapered point and counterbore bits. A counterbore is similar to a countersink bit, but it creates a flat bottom instead of tapered sides for round head screws.
In conclusion, we hope this has provided you with information about the No-Mar countersink as well as some of the other countersink options we offer. We encourage everyone to take a look at the carbide tipped countersink lineup, read the reviews and give one of them a try; you won’t be disappointed.
FAQs
What is the advantage of using a No-Mar Countersink bit?
The No-Mar Countersink bit features a non-marring depth stop with a no-thrust ball bearing, which prevents burning or scratching the wood surface. It also delivers consistent depth and clean holes, saving time by reducing or eliminating the need for post-drill sanding or tear-out cleanup.
Can I use a countersink bit to hide screws completely?
Yes! By adjusting the depth stop, you can drill deeper to create a pocket for a wood plug. Using a plug cutter like the Amana #607-310 and a plug planer like the #PLP-100 allows you to completely conceal the screw, creating a smooth, seamless surface—ideal for fine furniture or decorative work.
What’s the difference between a countersink and a counterbore?
A countersink creates a conical hole that allows a flat-head screw to sit flush with or below the surface. A counterbore creates a flat-bottomed hole, ideal for round-head screws. Both allow for plug coverage, but they differ in shape and screw compatibility.
How do I choose the right countersink bit for my screws?
Match the size of the countersink to your screw diameter. ToolsToday offers countersinks in various sizes and styles—adjustable depth, hex or round shanks, and replaceable bits—so consider the material you're working with and how visible you want the screw heads to be.
Are there affordable countersink options that still protect the material surface?
Yes, ToolsToday offers Low Friction Adjustable Depth Stop Countersinks that are more budget-friendly while still providing no-burn, no-mar performance. They're a great alternative if you're looking to achieve professional results without the premium price tag.
What is the benefit of a replaceable carbide-tipped drill bit in a countersink set?
Replaceable carbide-tipped bits offer extended tool life and superior edge retention, especially when drilling hardwoods or composites. Instead of replacing the entire countersink assembly when the bit dulls, you can simply swap out the bit—saving time and money while maintaining precision.
I build custom furniture—will these countersink bits give me clean, professional results without extra sanding?
Yes! The No-Mar Countersink and similar premium options are designed specifically to eliminate surface marring and tear-out, leaving crisp, clean holes that don't require extra sanding. If you’re using wood plugs to conceal screws, the combination of adjustable depth and clean cutting ensures a flawless finish for high-end pieces.
