CMT 375.050.12 4 Flute Dowel Drill for Through Holes - 13/64" x 2-3/4" LH is a left-hand rotation, carbide-tipped through-hole boring tool engineered for precision dowel drilling in cabinet production, furniture manufacturing, and panel processing. Designed for use in multi-spindle CNC boring machines and panel processing centers, this 5mm diameter drill delivers clean, accurate through-holes in solid wood, chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels. Its 40mm cutting height and 70mm total length make it well suited for a wide range of panel thicknesses on automated production lines.

Key Features

• Carbide-Tipped (TCT) Construction - tungsten carbide cutting edges bonded to a high-strength steel body deliver long service life and consistent bore quality across high-volume production runs.
• Left-Hand (LH) Rotation - designed specifically for left-hand spindle positions in multi-spindle boring machines, ensuring proper chip evacuation and clean entry without tearout on the face side.
• Through-Hole Geometry (60 deg. point) - the 60 deg. sharpening angle is optimized for through-hole boring, producing accurate, splinter-free exit holes critical for dowel joint alignment.
• 2-Flute Cutting Configuration - two precisely ground flutes promote efficient chip clearance, reducing heat buildup and extending tool life during continuous panel boring operations.
• 5mm Diameter with 40mm Cutting Height - matches standard dowel boring requirements and accommodates panels across a broad thickness range without tool changes.
• 10x20mm Shank - a robust shank size ensures secure, vibration-free seating in compatible boring machine chucks and adapters, maintaining tight hole-placement tolerances.
• HW (Tungsten Carbide) Material - hard-metal carbide construction resists wear in abrasive materials such as chipboard, MDF, and laminates, keeping edges sharp longer than standard high-speed steel alternatives.

Why This Product

• The left-hand rotation configuration fills a specific requirement in multi-spindle CNC boring centers where right-hand and left-hand spindles must be matched separately - choosing the correct LH drill eliminates misalignment and surface damage on panel faces.
• With a 40mm cutting height on a 70mm long-series body, this drill handles through-hole boring in panels of varying thickness without requiring a tool change or spindle adjustment, keeping production lines running efficiently.
• The 60 deg. through-hole point geometry is purpose-built for dowel assembly joints, producing clean entry and exit points that seat dowels precisely - reducing the risk of blowout that can occur with general-purpose drill bits.
• Tungsten carbide (HW) construction stands up to the abrasive nature of chipboard, MDF, HDF, and laminates - materials that rapidly dull standard steel tooling - making this drill a cost-effective choice for high-cycle production environments.

Specifications

• Manufacturer Part Number: 375.050.12
• Brand: CMT Orange Tools
• Diameter: 5mm
• Cutting Height: 40mm
• Total Length: 70mm
• Shank: 10x20mm
• Number of Teeth: 2
• Rotation: Left-Hand (LH)
• Tooth Geometry: Through holes 60
• Blade Material: HW (Tungsten Carbide)
• Series: Through Hole Long Series (70mm)

Approved Applications

• Multi-Spindle CNC Boring Machine
• CNC Boring Center
• Panel Processing Center
• Boring Machine with Adapter or Chuck
• Chipboard
• MDF
• HDF
• Hardwood
• Softwood
• Plywood
• Laminates
• Coated Panels