The CMT Dowel Drill for Through Holes - 5/16" x 27 x 57.5mm, Right-Hand Rotation is a solid super micrograin carbide boring bit engineered for clean, precise through-hole drilling in hardwood, particle board, MDF, veneered panels, and other difficult composite materials. Built entirely from premium quality super micrograin carbide sourced from Luxembourg, this bit delivers exceptional bore quality and longevity on high-speed boring units and CNC routers alike. Whether you are processing furniture panels, hardwood components, or coated boards, this dowel drill is designed to maintain accuracy and surface quality hole after hole.

Key Features

• Solid super micrograin carbide construction (HW) - the entire bit is made from a single unit of premium carbide, providing extra safety and allowing an almost infinite number of resharpenings, reducing long-term tooling costs significantly.
• Curved, negatively ground spurs at the tip - produces exceptionally clean bore walls with no rough edges, which is critical for dowel joinery and furniture panel applications where surface quality directly affects fit and finish.
• Centre point balanced design with a plunge edge running to the centre - reduces drilling resistance and increases production speed, keeping cycle times shorter on multi-spindle and CNC boring centers.
• Cylindrical head larger than traditional tips - delivers greater resistance to prolonged use and extends the interval between sharpenings, reducing downtime on production lines.
• 2 precision ground cutting edges (Z2) with 2 spiral flutes - ensures balanced chip evacuation and consistent bore quality across repeated drilling cycles without loading or overheating.
• Rated for extreme sharpening - the bit can withstand repeated resharpening cycles, making it a long-service-life investment rather than a disposable consumable.
• Parallel shank (10 x 27mm) with driving flat and adjustable screw length - provides secure, repeatable seating in boring unit chucks and CNC toolholders, preventing slippage during high-speed operation.
• Right-hand rotation (RH) - compatible with standard CNC boring centers and multi-spindle boring machines configured for right-hand tooling.

Why This Product

• Furniture manufacturers and panel processors who need clean through-holes without exit blowout will benefit from the negatively ground spur geometry, which shears the material fibers cleanly at both entry and exit points.
• Shops running high-volume CNC boring centers or multi-spindle units need tooling that holds up without frequent changeovers - the solid carbide body and extreme sharpening rating mean fewer interruptions and longer tool life between services.
• The ability to work accurately in hardwood, MDF, particle board, and veneered panels with a single bit type means less tooling inventory is needed to cover a range of panel processing applications.
• The centre-balanced tip and reduced-resistance plunge edge translate directly into faster feed rates and higher output per shift, making this bit well-suited for production environments where speed and precision must coexist.

Specifications

• Manufacturer Part Number: 313.080.41
• Brand: CMT Orange Tools
• Diameter: 5/16"
• Cutting Height: 27mm
• Total Length: 57.5mm
• Shank: 10 x 27mm
• Number of Cutting Edges: 2
• Rotation: Right-Hand (RH)
• Blade Material: HW (Solid Super Micrograin Carbide)
• Sharpening Rating: Extreme

Approved Applications

• Through-hole drilling for dowel connections and joinery
• Furniture panel manufacturing and processing
• Hardwood component boring
• Particle board and chipboard through-hole drilling
• MDF and HDF panel boring
• Veneered and coated panel processing
• High-speed multi-spindle boring machine operations
• CNC router and CNC boring center applications