Countersink bits create a conical recess so screw heads sit flush with or below the surface. Combined countersink and pilot drill bits save time when installing screws in timber and sheet metal.
What are countersink bits... Read More
Countersink bits create a conical recess so screw heads sit flush with or below the surface. Combined countersink and pilot drill bits save time when installing screws in timber and sheet metal.
What are countersink bits used for?
Countersink bits are used to create a conical recess in the surface of a material so that a screw head sits flush or below the surface. This is especially useful in:
Woodworking and cabinetry
Joinery and furniture assembly
Metal and plastic fastening where flush finishes are needed
They’re commonly used in combination with pilot hole drilling to prevent splitting and improve the appearance of fastened surfaces.
What types of countersink bits are available?
Single countersink bits – cut only the chamfer for screw heads
Combination bits – drill the pilot hole and countersink in one pass
Adjustable depth stop bits – allow for repeatable, uniform countersinks
Materials:
High-speed steel (HSS) – general use
Carbon steel – for softwoods and plastics
Carbide-tipped – for hardwoods, laminates, or metal
Titanium-coated – for longer life and heat resistance
How do I choose the correct countersink bit?
Consider:
Screw size – match the bit angle (typically 82° or 90°) and hole size to your screws
Material being drilled – use sharper, harder bits (like carbide or titanium) for harder materials
Drill type compatibility – check shank size (round or hex) to suit your chuck
Finish quality – combination bits reduce steps, while adjustable types provide cleaner, more accurate results for visible joints
HSS 90º Countersink Drill Bit Size: 90º 12,4mm Profile: C Shape
HSS 90º Countersink Drill Bit Size: 90º 10,4mm Profile: C Shape
HSS 90º Countersink Drill Bit Size: 90º 16,5mm Profile: C Shape
12mm 90º HSS Countersink The five flute rose pattern design has been a principle countersink design for over 100 years. The odd number of flutes ...
View full details5/8" Carbon Steel Countersink A common use is to allow the head of a countersunk bolt or screw, when placed in the hole, to sit flush with or bel...
View full detailsFESTOOL. Our passion for high-quality power tools has continued for more than 90 years. We share this fascination with our users and fans. Our p...
View full detailsSolid Tungsten Countersink Drill Bit 16,5mm Ø Solid Carbide 90° countersink Range of application For countersinking and deburring of steels wit...
View full detailsFor quick deburring and slight countersinking of holes while drilling. Manufactured from carbon tool steel Size: 8X20mm
For quick deburring and slight countersinking of holes while drilling. Manufactured from carbon tool steel Size: 5X16mm
For quick deburring and slight countersinking of holes while drilling. Manufactured from carbon tool steel Size: 6X16mm
.