CMT 346.080.11 Dowel Drill with Threaded Shank - 5/16" Diameter, M10 x 1.5 Right-Hand by CMT is a precision boring tool engineered for panel processing and cabinet production. Designed with a direct-mount M10 threaded shank, this two-flute dowel drill installs directly into multi-spindle boring machines without an adapter, reducing setup time and improving repeatability. Whether you are drilling shelf-pin holes, dowel joints, or construction bores in solid wood, chipboard, or MDF, this right-hand carbide-tipped bit delivers clean, flat-bottomed holes with consistent accuracy across production runs.

Key Features

• Hardmetal (HW) Carbide Construction - tungsten carbide tip bonded to a high-strength steel body means the cutting edge stays sharp longer in abrasive sheet goods like MDF, chipboard, and coated panels, reducing tool change frequency on the production line.
• M10 x 1.5 Threaded Shank for Direct Mounting - threads directly into the spindle of a multi-spindle boring machine without requiring an adapter, eliminating runout introduced by intermediate couplings and keeping hole placement precise.
• Right-Hand (RH) Rotation - matches the standard spindle direction of most multi-spindle CNC boring centers, ensuring immediate compatibility and correct chip evacuation for clean bore entry and exit.
• 2 Flutes and 2 Precision-Ground Spurs - the dual-spur geometry scores the material perimeter before the main cutters advance, producing clean bore walls and flat-bottom holes with minimal tearout on both faces of coated panels and laminates.
• 5/16" (approx. 8mm) Cutting Diameter with 43mm Cutting Height - the extended cutting height accommodates deeper bores in thick workpieces such as furniture panels, giving panel processors flexibility without changing tools.
• 63mm Relative Length - compact enough to fit standard spindle spacing on multi-row boring heads while still providing sufficient clearance above the workpiece surface during operation.

Why This Product

• The M10 threaded shank eliminates the need for an intermediate adapter or chuck, which means faster changeovers and one fewer potential source of runout when boring dowel holes in cabinet carcasses and furniture panels.
• Hardmetal (HW) carbide construction is specifically suited to the abrasive nature of MDF, chipboard, and coated sheet goods - materials that rapidly dull high-speed steel bits - helping shops maintain hole quality over longer production intervals.
• The dual-spur, two-flute geometry is purpose-built for flat-bottom dowel holes, making this bit the appropriate choice when joint integrity and glue surface area matter, such as in dowel-joined case construction.
• At 43mm of cutting height, the bit handles deeper panel bores than many standard short-series dowel drills, reducing the need to source specialty extended tooling for thicker substrate applications.

Specifications

• Manufacturer Part Number: 346.080.11
• Brand: CMT Orange Tools
• Diameter: 5/16"
• Cutting Height: 43mm
• Relative Length: 63mm
• Shank: M10 x 1.5 threaded
• Rotation: Right-Hand (RH)
• Number of Spurs: 2
• Number of Teeth: 2
• Material: HW (Hardmetal Carbide)
• Product Series: Threaded Shank Dowel Drill

Approved Applications

• Solid hardwood and softwood boring
• Chipboard and particle board
• MDF (medium-density fiberboard)
• HDF (high-density fiberboard)
• Plywood
• Laminates and coated panels
• Dowel joint drilling on multi-spindle CNC boring machines
• Shelf-pin and construction bore drilling on panel processing centers