CMT Dowel Drill with Countersink - 10mm x 12mm x 57.5mm, 10x28mm Shank, Left-Hand Rotation by CMT is a purpose-built boring tool designed for drilling and countersinking in a single pass on multi-spindle and CNC boring machines. The integrated countersink geometry creates a clean recess for bolt heads and panel connectors simultaneously with the primary bore, eliminating the need for a secondary tooling operation. With a left-hand (LH) rotation, 2 precision-ground cutting edges, and a tungsten carbide (HW) tipped head, this dowel drill delivers repeatable, clean-entry holes in panel materials including chipboard, MDF, plywood, and coated laminates.

Key Features

• Tungsten Carbide (HW) Tipped Head - the hard-metal carbide construction maintains cutting-edge sharpness longer than standard steel, reducing regrinding frequency and downtime in production environments.
• 2 Precision-Ground Cutting Edges (Z2) - dual cutting geometry distributes cutting load evenly across the bore, producing smooth, consistent hole walls on every pass.
• 2 Ground Spurs with Negatively Ground Sharpening (V2) - negatively ground spurs score the outer edge of the bore before the main cutting edges engage, preventing tearout and delivering clean entry holes in veneered panels, laminates, and coated board.
• 2 Spiral Flutes - dual flutes efficiently evacuate chips and dust from the cutting zone, reducing heat buildup and keeping the bore clear for a cleaner finish on deep cuts.
• PTFE-Coated Spiral Portion - the orange or black PTFE coating on the spiral resists pitch and adhesive buildup, preventing clogging and extending usable tool life in high-throughput panel processing.
• Precision Balanced Centre Point - the balanced centre point ensures accurate drill-down location every time, which is critical for dowel alignment and connector positioning in cabinet and furniture assembly.
• Parallel Shank with Driving Flat and Length Adjusting Screw (10x28mm) - the shank design allows secure seating in boring machine spindles and provides convenient length adjustment without removing the tool, saving setup time.
• Left-Hand (LH) Rotation - engineered specifically for left-hand spindle positions on multi-spindle boring machines, ensuring correct cutting geometry and chip flow direction for left-side drilling heads.
• Integrated Countersink - combining drilling and countersinking in one tool and one pass reduces cycle time, simplifies tooling management, and produces a consistently dimensioned recess for bolt heads and panel connectors.

Why This Product

• One-pass drilling and countersinking - because the countersink is built into the tool geometry, production lines eliminate a dedicated countersinking step, cutting cycle time and reducing the number of spindle positions required per panel.
• Built for left-hand spindle positions - LH rotation is specifically required for left-side heads on multi-spindle CNC boring centers; using a right-hand drill in these positions causes incorrect chip flow and poor cut quality. This tool is correctly spec'd for those positions from the start.
• Negatively ground spurs protect finished panel surfaces - for laminates, coated panels, and veneered boards where tearout at the hole entry is unacceptable, the negatively ground V2 spurs score a clean perimeter before the main cutting edges engage.
• PTFE spiral coating reduces maintenance intervals - in high-volume panel shops where adhesives and pitch accumulate quickly, the PTFE-coated flutes resist buildup and keep the tool cutting cleanly for longer, lowering the frequency of tool changes and cleaning stops.

Specifications

• Manufacturer Part Number: 376.100.12
• Brand: CMT Orange Tools
• Diameter: 10mm
• Cutting Height: 12mm
• Total Length: 57.5mm
• Shank: 10x28mm
• Rotation: Left-Hand (LH)
• Number of Cutting Edges: 2 (Z2)
• Number of Spurs: 2 (V2)
• Spur Sharpening: Negatively ground spurs
• Number of Spiral Flutes: 2
• Head Material: HW (Tungsten Carbide)
• Body Material: Super-strength steel
• Spiral Coating: PTFE (orange or black)
• Tool Type: Dowel Drill with Countersink

Approved Applications

• Drilling and countersinking in a single pass on boring machines and CNC boring centers
• Bolt head and panel connector recess machining
• Dowel hole boring for cabinet and furniture panel assembly
• Panel processing on multi-spindle CNC boring machines and panel processing centers
• Left-hand spindle position drilling on multi-spindle boring heads
• Chipboard, MDF, HDF, hardwood, softwood, plywood, laminate, and coated panel machining