Best #6 Drill Bits for Metal, Wood, and Screw Countersinking
The best #6 drill bit depends on what “#6” means for your job: a wire-gauge drill bit is 0.204 inches in diameter, while a #6 screw countersink set uses a 9/64-inch pilot bit. METALLIXITY and PATIKIL suit general light-duty drilling, MaxTool is a cobalt option for varied materials, and FTG USA offers countersink sets made for woodworking. Compare the size and purpose before choosing.
| Product | Best For | Key Distinction |
|---|---|---|
| METALLIXITY Micro Drill Bit | General DIY drilling | Five 0.204-inch bits |
| MaxTool No. 6 Drills | Metal drilling | M35 cobalt HSS |
| PATIKIL #6 Drill Bits | Light-duty, varied materials | Five gold-finish bits |
| FTG USA TCT Countersink | Woodworking | Drill, countersink, and counterbore |
| FTG USA 6-Piece Countersink Set | Wood screws | Adjustable depth stop included |
METALLIXITY Micro Drill Bit
Best for: DIY users who need multiple identical bits for light-duty drilling. This five-piece set has a 0.204-inch cutting diameter, 61 mm flute length, 92 mm overall length, and 135-degree split point. Its 4341 high-speed steel construction is listed for use with wood, plastic, copper, aluminum, and some thin or medium-to-low-hardness metals.
The broad material range makes this a practical general-purpose choice when the work is not heavy-duty. The manufacturer advises adjusting drill speed to the material, using lower speeds for harder materials. Limitation: the listing describes low-intensity applications; it is not presented as a bit for demanding machining.
MaxTool No. 6 Cobalt Drills
Best for: Buyers looking for a 0.204-inch drill bit set made with M35 cobalt high-speed steel. The five jobber-length, straight-shank drills are described for cutting metal, plastic, and wood. The listing also states that drill dimensions and tolerances conform to ASME/ANSI B94.11M or USCTI standards.
Choose this set if material and stated dimensional standards matter to your selection. Its cobalt HSS construction distinguishes it from the 4341 HSS micro-bit options in this list. Limitation: the product details do not specify a point angle, flute length, or application-specific speed guidance, so confirm those requirements for your project.
PATIKIL #6 Micro Drill Bits
Best for: Users who want five 0.204-inch bits for light-duty work across several materials. These 4341 HSS twist drills have a 135-degree point, 61 mm flute length, and 92 mm overall length. The listing names low-carbon steel, aluminum alloy, brass, cast iron, medium-carbon steel, stainless steel, acrylic, plastic, and wood as applicable materials.
The gold finish is described as helping resist wear and corrosion. The listing recommends low RPM and flood coolant for thicker metals. Limitation: thicker-metal work requires those conditions, so this is not the most straightforward choice for users who cannot control speed or provide coolant.
FTG USA TCT Wood Countersink Bit
Best for: Woodworkers who need a prepared hole for a standard #6 screw. This is a tapered 9/64-inch pilot drill, not a 0.204-inch wire-gauge drill bit. It is designed to drill, countersink, and counterbore a 3/8-inch plug hole in one step. The listing specifies an 82-degree chamfer, tungsten-carbide-tipped cutters, an M2 HSS pilot bit, and a 1/4-inch quick-change hex shank.
Choose it for combined hole preparation in hardwood or softwood. Limitation: it is designed for woodworking and #6 screws, not general-purpose metal drilling.
FTG USA Six-Piece #6 Countersink Set
Best for: Woodworkers who want adjustable countersinking depth and a depth stop in one set. It includes six tapered #6 (9/64-inch) countersink bits, a 3/8-inch depth stop collar, and a hex wrench. The bits are described for drilling, countersinking, and counterboring wood in one operation, with an 82-degree chamfer.
Compared with the single TCT option, this set emphasizes multiple bits and adjustable depth control. Its hex shank is listed as compatible with 1/4-inch standard quick-change chucks, including impact drills. Limitation: it is a woodworking countersink set, not a set of 0.204-inch general-purpose drill bits.
Buying Guide: How To Choose A #6 Drill Bit
Does #6 mean 0.204 inches or a #6 screw?
Check the measurement before buying. A wire-gauge No. 6 drill is 0.204 inches in diameter. A countersink bit for a #6 wood screw may use a 9/64-inch pilot drill and has a different purpose. The product name and listed diameter help distinguish them.
What materials will you drill?
For light-duty drilling in materials such as wood, plastic, aluminum, or thin metal, consider the 4341 HSS options. The MaxTool set uses M35 cobalt HSS and is listed for metal, plastic, and wood. For thicker metal, review the maker’s operating guidance and make sure the bit and drilling setup suit the job.
Do you need a pilot hole or a countersink?
A standard twist drill makes a hole. A tapered countersink set prepares a wood screw hole and may also create a recess for a plug. Choose an FTG countersink product when you need those combined woodworking operations, rather than when you need a standard 0.204-inch drill bit.
What else should you compare?
- Quantity: The micro-bit options come in five-piece packs; the FTG woodworking sets include multiple bits or an integrated countersink design.
- Point and shank details: Check the listed point angle, overall length, and chuck requirements against your project and tool.
- Depth control: Choose a set with an adjustable stop if repeatable countersink depth is important.
Frequently Asked Questions
What is the diameter of a No. 6 wire-gauge drill bit?
A No. 6 wire-gauge drill bit has a listed cutting diameter of 0.204 inches, or 5.182 mm.
Is a #6 screw countersink bit the same size?
No. The countersink products here use a 9/64-inch tapered pilot bit for #6 wood screws. That is not the same diameter as a 0.204-inch wire-gauge drill.
Can a #6 drill bit be used on metal?
Some listed 0.204-inch bits are specified for metal. Check the particular product’s material guidance, and follow its speed or coolant instructions where provided.
Which option is intended for wood screws?
The FTG USA tapered countersink products are intended for wood screw preparation. They are designed to drill a tapered pilot hole and countersink; some also counterbore for a plug.
What does a 135-degree point indicate?
It describes the drill point angle. The METALLIXITY and PATIKIL listings specify a 135-degree point; compare that detail with the needs of your drilling task.