CMT 367.080.11 Dowel Drill for Through Holes - 5/16" x 1-3/16" x 2-13/64" RH by CMT is a short-series, right-hand rotation boring bit engineered specifically for drilling clean through holes in solid wood, chipboard, MDF, laminates, and coated panels. Built with a hardmetal (tungsten carbide) cutting edge and a 2-flute geometry, this dowel drill delivers precise, splinter-free bores in panel processing operations where exit-side quality is critical. With a slim 8x20mm parallel shank and compact 56mm overall length, it is sized for multi-spindle CNC boring machines and panel processing centers where tight spindle spacing and consistent hole quality are required.

Key Features

• Hardmetal (HW) Carbide Cutting Edge - tungsten carbide construction resists wear and heat buildup during repeated through-hole boring, maintaining sharpness across high-volume production runs in wood composites and laminates.
• 2-Flute Geometry - dual cutting edges create balanced chip evacuation and reduce lateral pressure on the workpiece, producing clean, consistent bore walls with minimal tearout on both entry and exit faces.
• Short-Series Through-Hole Design - the compact 56mm total length and 30mm cutting height are optimized for tight spindle-to-spindle spacing on multi-bore heads, allowing dense drill patterns without interference.
• Right-Hand (RH) Rotation - matched to the standard spindle direction of most CNC boring centers and panel processing machines, ensuring straightforward installation and predictable cutting performance.
• 8x20mm Parallel Shank with Driving Flat - the positive-drive shank seats securely in boring head collets and adapters, preventing slippage under load and maintaining precise hole location throughout the cut.
• 60 deg. Sharpening Angle for Through Holes - the geometry is specifically configured for through-hole applications, controlling the exit of the drill to prevent blowout and surface damage on the back face of the panel.

Why This Product

• Designed specifically for through-hole boring - the 60 deg. point geometry controls chip exit and prevents blowout on the underside of the panel, a common problem with general-purpose twist drills used in furniture and cabinet panel work.
• Carbide (HW) construction extends tool life in abrasive materials like chipboard, MDF, HDF, and laminated panels, reducing the frequency of bit changes during high-volume production runs.
• The 8x20mm parallel shank is a standard boring machine interface, making this bit compatible with a wide range of multi-spindle CNC boring heads, boring centers, and panel processing equipment without requiring special adapters.
• Compact short-series dimensions allow close drill center spacing on multi-spindle machines, making this bit well suited for furniture carcass assembly, shelf pin holes, and dowel joint production where multiple holes must be drilled in tight proximity.

Specifications

• Manufacturer Part Number: 367.080.11
• Brand: CMT Orange Tools
• Product Type: Dowel Drill for Through Holes
• Diameter: 5/16"
• Cutting Height: 30mm (1-3/16")
• Total Length: 56mm (2-13/64")
• Shank: 8x20mm
• Number of Flutes: 2
• Blade Material: HW (Hardmetal / Tungsten Carbide)
• Rotation: Right-Hand (RH)
• Sharpening Angle: Through holes 60 deg.
• Series: Through Hole Short Series

Approved Applications

• Chipboard and particleboard panels
• MDF (medium-density fiberboard)
• HDF (high-density fiberboard)
• Hardwood and softwood solid lumber
• Plywood
• Laminates and coated panels
• Dowel joint production
• Shelf pin and furniture assembly hole patterns
• Multi-spindle CNC boring machine operations
• Panel processing center applications