CMT 367.050.12 Dowel Drill for Through Holes by CMT is a precision-engineered, left-hand rotation boring tool designed for clean, blowout-free through-hole drilling in solid wood, chipboard, MDF, and laminated panels. Built with a tungsten carbide (HW) cutting edge and a compact short-series geometry, this 5mm diameter drill delivers consistently flat-bottomed entry with a controlled exit - making it a reliable choice for multi-spindle CNC boring machines, panel processing centers, and industrial boring equipment requiring left-hand (LH) tooling.

Key Features

• Tungsten Carbide (HW) Cutting Material - hard carbide construction maintains a sharp edge through high-volume production runs in abrasive materials like chipboard, MDF, and laminates, reducing the frequency of tool changes and downtime.
• Left-Hand (LH) Rotation - engineered specifically for left-hand spindle positions on multi-spindle boring heads and CNC boring centers, ensuring correct chip evacuation and a clean bore wall without reverse tearout.
• 2-Flute Through-Hole Geometry - dual cutting edges with through-hole sharpening at 60 deg. produce a controlled exit that prevents blowout on the panel face, critical when drilling coated panels and laminates where surface quality matters.
• Short-Series Design (56mm Total Length) - the compact 2-13/16 in. overall length reduces deflection and vibration during operation, contributing to tighter bore tolerances and a cleaner finished hole.
• 8x20mm Parallel Shank with Driving Flat - positive drive interface locks the drill securely into the boring head chuck or adapter, preventing slippage under load and maintaining consistent hole positioning across a panel run.
• 30mm Cutting Height - 1-3/16 in. of effective cutting length accommodates standard panel thicknesses encountered in furniture and cabinet production without tool repositioning.

Why This Product

• Precision fit for LH spindle configurations - machines with mixed left-hand and right-hand spindle positions require dedicated LH-rotation drills. This tool is purpose-built for those positions, ensuring proper chip flow and bore quality rather than a compromise solution.
• Through-hole sharpening prevents panel surface damage - the 60 deg. through-hole geometry guides the exit cleanly through the workpiece, protecting visible laminate and coated panel surfaces from the splintering that standard drills can cause on exit.
• Carbide construction suits demanding production materials - chipboard, MDF, and HDF are highly abrasive. The HW carbide cutting edge retains sharpness far longer than HSS alternatives in these materials, lowering cost-per-hole in high-cycle environments.
• Compact short-series format reduces setup complexity - the standardized 8x20mm shank and short overall length integrate directly into most industrial boring machine chucks and adapters without custom tooling holders or extended reach accessories.

Specifications

• Manufacturer Part Number: 367.050.12
• Brand: CMT Orange Tools
• Diameter: 5mm (13/64 in.)
• Cutting Height: 30mm (1-3/16 in.)
• Total Length: 56mm (2-13/16 in.)
• Shank: 8x20mm
• Number of Flutes: 2
• Rotation: Left-Hand (LH)
• Blade Material: Tungsten Carbide (HW)
• Sharpening Type: Through Holes 60
• Series: Through Hole Short Series

Approved Applications

• Chipboard and particleboard panels
• MDF and HDF sheet goods
• Solid hardwood and softwood
• Plywood
• Laminates and coated panels